back when I first got into wheelies, before the slow stuff blew up, i played around with shifting in wheelie, the idea is to be up high enough, make a quick shift, and then give it power to keep it up. Not necessarily past bp, but close. Now I never do that, if your rpms are rising steadily to where you need to shift, or run out of gear, then you are not at bp. I think youll have more fun learning how to rock it steady without reving through gear and needing to shift. Im not sure new rearsets would help with your missing shifts, and i dont know about the shift kits. Ive accidentally hit the shifter and knocked it into neutral in a wheelie, and your right, it sucks!! Good Luck.