I JUST CHANGED MY PISTON RINGS (THE PISTON LOOKS GREAT SO AS THE Cylinder) PUT ON NEW VALVE SEAL AND IT STILLS SMOKES A BIT ON THE START. the smoke is so little that it stops in less than a half a second. When i leave the trx on neutral and don't accelerate it, it doesn't smoke at all. But once i hop on it and take it for a ride it smokes on revs. i have a full fmf exhaust with racing filter and wiseco power commander. i haven't ridden it as much after doing the valve seal and piston rings change. what could it be? can it be that the rings haven set in yet?