Okay, I'm working on my second bag and both times I've had a similar problem with the gussets being slightly off. I thought it was just not being careful the first time, but this time i tried to count carefully and it still ended up slightly off. So i sewed it to the front, then was very careful about sewing it to the back, but the left is just a hole lower than the right. How to you ensure you have the same number of holes on the gusset and the back? Punch them together?