Good idea, Chris. I should be doing that. To solve the same problem, I have been using a square when I punch holes in the gusset. First, I punch the holes in the front and back, doing my best to make sure I punch the same number of holes. Then I cut the gusset long, and use a square to check every couple of inches to make sure I'm using the chisel evenly on both sides of the gusset. Once I've reached the same amount of holes on the front and back, I cut off the extra gusset length on both sides. So yes..... overly complicated, compared to what David and Chris are saying. But I don't have to worry about inconsistent stitching on the back.