I bought my 92 off a kid who put toomey t6 pipes,cpi silencers,no air box with k&n pod filters.stock everything else.i run premium pump gas mixed with Klotz at 32:1.it has 300 mains.i am at 515ft.and he advanced timing +5.only thing I've done to it is repack the silencers and put a new clutch in.the damn thing has no balls.every gear pretty much feels the same.no power band.could jetting be a factor here? Toomey said they send 280 mains with the t6 pipes.why this guy went up to 300 I don't know.any recommendations would be appreciated. Thank you all for the help and for letting me in