ok this is the problem.I lost the filter bolt for my bike and realy wanted to ride so I made a new bolt but it bottomed out when i thought it had pushed the seal down.about 4 rides later my power band just stopped working.I pulled the filter off and saw it had leaked so i pulled the carb and there was dirt in the carb but not in the reeds.I have never taken a power valve apart so I don't know were to start with that.I think it might just be gummed up because of the bike running rich.how can i find out if I did any damagae to the motor?it doesn't have many hours on it so i don't think its time but what can I do now?any imput is apreciated