Hi Faith! I'm putting together my first Brinley and I have a quick question. My gusset is 20.5" as stated in the pattern, yet when I clip it around the back flap, it protrudes beyond the top of the back panel a little more than 1/4" on both sides. I'm just wondering if I'm doing something wrong because in your video it appears the gusset is perfectly aligned with no overage, if that makes sense. I don't want to cut the gusset down before I ask you.