my blaster has a fmf gold series head pipe, fmf power core silencer, and a 240 kit. the jet i'm running is 250, and the fuel mixture is pretty rich. it barley runs. it won't hit power band at all. always bogs up a hill or when you don't down shift early enough. i wanted to know if i needed a bigger jet, or what else could be wrong with it? we think the rings are going bad to. so?