Fix slider screw holes depth

main.scad

@@ -163,7 +163,7 @@ module phone_harness() {
             screws_area_l=0.7*l;
             for (i=[0:screws-1]) {
                 $fn=$preview ? 6 : 16;
-                right(-screws_area_l/2 + screws_area_l/(screws-1) * i) cylinder(d2=screwmount_screw*0.5, d1=screwmount_screw, h=ss.y/2);
+                right(-screws_area_l/2 + screws_area_l/(screws-1) * i) cylinder(d2=screwmount_screw*0.5, d1=screwmount_screw, h=ss.y*0.7);
             }
         }
     }