My usual procedure for *topstitching* (edit) seams with bulky transitions (e.g. crotch seam crossing yokes on jeans):
1. Grade and hammer seam.
2. Make offering to ancestors.
3. Ready shims.
4. Cleansing breaths.
5. Turn on machine.
6. Sew.
7. Agonize over the quality of the stitches and redo at least one section.
Revised procedure for new walking foot industrial machine:
1. Turn on machine.
2. Sew.
My only regret is that I waited so long to add one of these beasts to my arsenal.