alright i have a 91 RM250 the thing is that it runs. First gear is bad the "power-ban" dont kick in or (just not there) all the other gears do just fine. The bike has new 330 Jets in it but no new pilot jet. it has new crank seal, new reeds and it has stock sprok's 13 front 49 rear. any idea in what i need to do to fix this thanks guys