i just started doing kinda slow wheelies in second i been doing everything in second (01 929 stock gear) it weird to pop so i get going a little fast then i throw it back and use alot a brake i can get it like around 20 before it get real squirly front back side side i'm runnin 15 psi why's it get like this and what to do

p.s. i'm using second cuz right now i'm scared a first w/o a crash cage any way