module BottomStrapCutouts(y_c){
NormalStrapCutouts(y_c, bottom_base_z, -45);
}
+// XXXX need rear strap
+// XXXX need bottom-to-top registration
module CoverStrapCutouts(){
BothSides(){
translate([ -total_side_wall_x, -cover_strap_c_d_y, cover_top_z ])