Youngest son is outgrowing his xr100, still rides it but is getting a bit cramped. When he does ride it there's 2 basic throttle positions...full bore or idle. He's bored with the power, or lack thereof as well. Found a project 04 kx85 locally that I'm considering picking up for him. 3" taller seat height, better suspension all around, and I can convert it to big wheel pretty easily when he needs a bit more out of it. I spent the majority of my younger 20 years building 2 stroke motors so I'm not worried about maintainance issues or anything like that. Do you think the kx is a good transition bike coming off an xr100, is the power manageable for a beginning rider?