diff --git a/buttons.scad b/buttons.scad
index bc42d60..e305e6b 100644
--- a/buttons.scad
+++ b/buttons.scad
@@ -42,10 +42,10 @@ beveled = true;
 bevel_size = 1;
 
 // Spiel zwischen den Schulterbuttons und der Hülle.
-button_trigger_clearance = 0.25;
+button_trigger_clearance = 0.4;
 
-// Dicke der Schiene und Widerhaken der Schulterbuttons.
-button_trigger_rail = space - 4.5 - button_trigger_clearance;
+// Dicke der Widerhaken der Schulterbuttons.
+button_trigger_rail = 2.75;
 
 // Gesamthöhe der Systembuttons.
 system_height = space - button_system_size - button_clearance + top + protrusion;
diff --git a/svg/buttons trigger lower.svg b/svg/buttons trigger lower.svg
index 2ef4cc5..5ff51ae 100644
--- a/svg/buttons trigger lower.svg	
+++ b/svg/buttons trigger lower.svg	
@@ -3,8 +3,8 @@
 
 <svg
    width="18.503187mm"
-   height="15.24995mm"
-   viewBox="0 0 18.503187 15.24995"
+   height="14.74995mm"
+   viewBox="0 0 18.503187 14.74995"
    version="1.1"
    id="svg1"
    inkscape:version="1.3.2 (091e20ef0f, 2023-11-25, custom)"
@@ -24,8 +24,8 @@
      inkscape:deskcolor="#d1d1d1"
      inkscape:document-units="mm"
      inkscape:zoom="8.4223858"
-     inkscape:cx="37.222232"
-     inkscape:cy="29.207876"
+     inkscape:cx="35.203802"
+     inkscape:cy="28.258026"
      inkscape:window-width="1438"
      inkscape:window-height="880"
      inkscape:window-x="0"
@@ -38,11 +38,11 @@
      inkscape:label="Layer 1"
      inkscape:groupmode="layer"
      id="layer1"
-     transform="translate(-102.39375,-124.35416)">
+     transform="translate(-102.92292,-124.61875)">
     <path
        id="path3"
        style="display:inline;fill:#800080;fill-rule:evenodd;stroke:none;stroke-width:0.264583px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       d="m 108.39375,124.35416 1.5e-4,0.25007 h -3.99975 c -2,0 -2.0004,1.99988 -2.0004,1.99988 l 1.2e-4,7.24976 1.00016,1.00024 v 3.5 l 1.25,1.25 h 0.5 l 1.75,-1.74977 v -0.50023 l -2.49976,-2e-4 -1.2e-4,-10.7498 h 14.49988 l 1.3e-4,1.49989 -0.99994,0.99994 v 8.24997 l -2.50019,2e-4 v 0.50023 l 1.75,1.74977 1.50001,-2.1e-4 2.24999,-2.24999 -1.2e-4,-10.7498 c 0,0 0.16803,-1.97974 -1.99988,-1.99988 l -1.5e-4,-0.25007 h -1.50017 v 0.50022 h -1.50016 v -0.50022 h -1.49965 v 0.50022 h -1.50017 v -0.50022 h -1.50017 v 0.50022 h -1.49965 v -0.50022 z m 11.50028,4.24995 -6e-5,8.25006 -0.99994,0.99994 7e-5,-8.25006 z"
+       d="m 108.92291,124.61875 1.6e-4,0.25007 h -3.99976 c -2,0 -2.00039,1.99988 -2.00039,1.99988 l 1.2e-4,6.74976 1.00016,1.00024 v 3.5 l 1.25,1.25 h 0.5 l 1.75,-1.74977 v -0.50023 l -2.49977,-2e-4 -1.2e-4,-10.2498 h 14.49989 l 1.2e-4,1.49989 -0.99994,0.99994 v 7.74997 l -2.50018,2e-4 v 0.50023 l 1.75,1.74977 1.50001,-2.1e-4 2.24999,-2.24999 -1.2e-4,-10.2498 c 0,0 0.16803,-1.97974 -1.99988,-1.99988 l -1.5e-4,-0.25007 h -1.50017 v 0.50022 h -1.50017 v -0.50022 h -1.49965 v 0.50022 h -1.50016 v -0.50022 h -1.50017 v 0.50022 h -1.49965 v -0.50022 z m 11.50029,4.24995 -6e-5,7.75006 -0.99994,0.99994 6e-5,-7.75006 z"
        sodipodi:nodetypes="ccscccccccccccccccccccccccccccccccccccccccc" />
   </g>
 </svg>
diff --git a/svg/buttons trigger upper.svg b/svg/buttons trigger upper.svg
index 2e97fa6..fbeb03f 100644
--- a/svg/buttons trigger upper.svg	
+++ b/svg/buttons trigger upper.svg	
@@ -3,8 +3,8 @@
 
 <svg
    width="18.503187mm"
-   height="15.24995mm"
-   viewBox="0 0 18.503187 15.24995"
+   height="14.74995mm"
+   viewBox="0 0 18.503187 14.74995"
    version="1.1"
    id="svg1"
    inkscape:version="1.3.2 (091e20ef0f, 2023-11-25, custom)"
@@ -24,8 +24,8 @@
      inkscape:deskcolor="#d1d1d1"
      inkscape:document-units="mm"
      inkscape:zoom="8.4223858"
-     inkscape:cx="34.966339"
-     inkscape:cy="28.851682"
+     inkscape:cx="35.203802"
+     inkscape:cy="28.258026"
      inkscape:window-width="1438"
      inkscape:window-height="880"
      inkscape:window-x="0"
@@ -38,11 +38,11 @@
      inkscape:label="Layer 1"
      inkscape:groupmode="layer"
      id="layer1"
-     transform="translate(-102.39375,-124.35416)">
+     transform="translate(-102.92292,-124.61875)">
     <path
        id="path7"
        style="display:inline;fill:#ff00ff;fill-rule:evenodd;stroke:none;stroke-width:0.264583px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       d="m 108.39374,124.35416 1.6e-4,0.25007 h -3.99976 c -2,0 -2.00039,1.99988 -2.00039,1.99988 l 1.2e-4,7.24976 1.00016,1.00024 v 3.5 l 1.00023,-1.0002 -1.2e-4,-10.7498 h 14.49989 l 1.2e-4,1.49989 -0.99994,0.99994 -1.8e-4,9.75017 0.75001,0.74979 2.24999,-2.24999 -1.2e-4,-10.7498 c 0,0 0.16803,-1.97974 -1.99988,-1.99988 l -1.5e-4,-0.25007 h -1.50017 v 0.50022 h -1.50017 v -0.50022 h -1.49965 v 0.50022 h -1.50016 v -0.50022 h -1.50017 v 0.50022 h -1.49965 v -0.50022 z m 11.50029,4.24995 -6e-5,8.25006 -0.99994,0.99994 6e-5,-8.25006 z"
+       d="m 108.92291,124.61875 1.6e-4,0.25007 h -3.99976 c -2,0 -2.00039,1.99988 -2.00039,1.99988 l 1.2e-4,6.74976 1.00016,1.00024 v 3.5 l 1.00023,-1.0002 -1.2e-4,-10.2498 h 14.49989 l 1.2e-4,1.49989 -0.99994,0.99994 -1.8e-4,9.25017 0.75001,0.74979 2.24999,-2.24999 -1.2e-4,-10.2498 c 0,0 0.16803,-1.97974 -1.99988,-1.99988 l -1.5e-4,-0.25007 h -1.50017 v 0.50022 h -1.50017 v -0.50022 h -1.49965 v 0.50022 h -1.50016 v -0.50022 h -1.50017 v 0.50022 h -1.49965 v -0.50022 z m 11.50029,4.24995 -6e-5,7.75006 -0.99994,0.99994 6e-5,-7.75006 z"
        sodipodi:nodetypes="ccsccccccccccccccccccccccccccccccccc" />
   </g>
 </svg>
diff --git a/svg/front construction.svg b/svg/front construction.svg
index d2387f2..4bdf843 100644
--- a/svg/front construction.svg	
+++ b/svg/front construction.svg	
@@ -45,9 +45,9 @@
      borderopacity="1.0"
      inkscape:pageopacity="0.0"
      inkscape:pageshadow="2"
-     inkscape:zoom="7.4069982"
-     inkscape:cx="69.461337"
-     inkscape:cy="17.145947"
+     inkscape:zoom="9.5296451"
+     inkscape:cx="86.204679"
+     inkscape:cy="5.5615922"
      inkscape:document-units="mm"
      inkscape:current-layer="layer6"
      inkscape:document-rotation="0"
@@ -858,12 +858,12 @@
     <path
        id="path3"
        style="fill:#800080;fill-rule:evenodd;stroke:none;stroke-width:0.264583px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       d="m 19.249711,-5.4999549 1.55e-4,0.2500771 H 15.25011 c -1.999998,0 -2.000395,1.9998779 -2.000395,1.9998779 l 1.22e-4,7.2497558 1.000163,1.0002439 0,3.4999999 1.25,1.2499999 0.5,0 1.75,-1.749772 V 7.4999997 L 15.250232,7.4998006 15.25011,-3.2499999 H 29.75 l 1.22e-4,1.499894 -0.999939,0.99993905 V 7.4998006 L 26.25,7.4999997 V 8.0002276 L 28,9.7499996 29.500008,9.7497925 31.75,7.4998006 31.749878,-3.2499999 c 0,0 0.168031,-1.9797376 -1.999878,-1.9998779 l -1.55e-4,-0.2500771 h -1.500167 v 0.5002279 h -1.500167 v -0.5002279 h -1.49965 v 0.5002279 h -1.500166 v -0.5002279 h -1.500167 v 0.5002279 h -1.49965 V -5.4999549 Z M 30.75,-1.25 30.749939,7.0000607 29.75,7.9999997 l 6.1e-5,-8.25006073 z"
+       d="m 19.249711,-4.9999549 1.55e-4,0.2500771 H 15.25011 c -1.999998,0 -2.000395,1.9998779 -2.000395,1.9998779 L 13.249837,3.9997559 14.25,4.9999998 V 8.4999997 L 15.5,9.7499996 H 16 l 1.75,-1.749772 V 7.4999997 L 15.250232,7.4998006 15.25011,-2.7499999 H 29.75 l 1.22e-4,1.499894 -0.999939,0.99993905 V 7.4998006 L 26.25,7.4999997 V 8.0002276 L 28,9.7499996 29.500008,9.7497925 31.75,7.4998006 31.749878,-2.7499999 c 0,0 0.168031,-1.9797376 -1.999878,-1.9998779 l -1.55e-4,-0.2500771 h -1.500167 v 0.5002279 h -1.500167 v -0.5002279 h -1.49965 v 0.5002279 h -1.500166 v -0.5002279 h -1.500167 v 0.5002279 h -1.49965 V -4.9999549 Z M 30.75,-0.75 30.749939,7.0000607 29.75,7.9999997 l 6.1e-5,-7.75006073 z"
        sodipodi:nodetypes="ccscccccccccccccccccccccccccccccccccccccccc" />
     <path
        id="path7"
        style="fill:#ff00ff;fill-rule:evenodd;stroke:none;stroke-width:0.264583px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       d="m 19.249711,-5.4999549 1.55e-4,0.2500771 H 15.25011 c -1.999998,0 -2.000395,1.9998779 -2.000395,1.9998779 l 1.22e-4,7.2497558 1.000163,1.0002439 0,3.4999999 1.000232,-1.0001991 -1.22e-4,-10.7498005 H 29.75 l 1.22e-4,1.499894 -0.999939,0.99993905 L 28.75,8.9999997 29.500008,9.7497925 31.75,7.4998006 31.749878,-3.2499999 c 0,0 0.168031,-1.9797376 -1.999878,-1.9998779 l -1.55e-4,-0.2500771 h -1.500167 v 0.5002279 h -1.500167 v -0.5002279 h -1.49965 v 0.5002279 h -1.500166 v -0.5002279 h -1.500167 v 0.5002279 h -1.49965 V -5.4999549 Z M 30.75,-1.25 30.749939,7.0000607 29.75,7.9999997 l 6.1e-5,-8.25006073 z"
+       d="m 19.249711,-4.9999549 1.55e-4,0.2500771 H 15.25011 c -1.999998,0 -2.000395,1.9998779 -2.000395,1.9998779 L 13.249837,3.9997559 14.25,4.9999998 V 8.4999997 L 15.250232,7.4998006 15.25011,-2.7499999 H 29.75 l 1.22e-4,1.499894 -0.999939,0.99993905 L 28.75,8.9999997 29.500008,9.7497925 31.75,7.4998006 31.749878,-2.7499999 c 0,0 0.168031,-1.9797376 -1.999878,-1.9998779 l -1.55e-4,-0.2500771 h -1.500167 v 0.5002279 h -1.500167 v -0.5002279 h -1.49965 v 0.5002279 h -1.500166 v -0.5002279 h -1.500167 v 0.5002279 h -1.49965 V -4.9999549 Z M 30.75,-0.75 30.749939,7.0000607 29.75,7.9999997 l 6.1e-5,-7.75006073 z"
        sodipodi:nodetypes="ccsccccccccccccccccccccccccccccccccc" />
     <use
        x="0"