After doing some chop building exercises for the past month, I've noticed amazing improvement in all aspects of my playing. I play with probably about 2/3 lower lip in the mouthpiece. It seems to me that my bottom chops are much stronger and developed than my top chops. Is this normal for everyone? Just people that play with more lower lip? Not normal at all. I'm trying to develop my top chops more, but it's hard since they don't need to work as hard as the bottom with my embouchure. If it's not normal, does anyone have tips on isolating and strengthening the upper chops/corners?