I'm going to have my 2004 KTM 125SX rebuilt, and probably rejetted. As i can remember from before it blew up, it wouldn't make it up any hills (no matter what gear or what size of the hill), wouldnt give me anything in first gear around a corner, etc. If i were to rebuild it, and rejet it, would it run better? I CANNOT figure out why its doing this. Is there a different reason??