holder_front_all = crewpunch_shaft_max_y - crewpunch_biggest_shape[1][0]
+ attach_ysz + crewpunch_systematic_size_error + crewpunch_skew_yoff
holder_front_all = crewpunch_shaft_max_y - crewpunch_biggest_shape[1][0]
+ attach_ysz + crewpunch_systematic_size_error + crewpunch_skew_yoff