The Calculate Part code was not functioning correctly when calculating the leading end notch locations on the first part of an empty part queue. This resulted in a full notch being added to the leading edge and then the excess was cut off to create the correct notch size for the leading-edge connector.

This change corrects that issue. The leading-edge notch location(s) will be shifted so that no extra scrap or shear is required to finish the leading-edge notch for the leading-edge connector.