I recently got my first RM 250.. it's a 97 but it's good as a new bike.. all the bearings, chain, sprockets, rads, forks, swingarm linkages etc are all perfect, this bike couldn't have been ridden that much.. It does though need a top end because it lacks compression compared to my other bikes.. My question is, the cylinders on these bikes are they lined with Nikasil like my old CR's used to be? Can they be bored or do you have to order a new sleeve? Also does somebody have a parts list that shows what year bikes parts interchange with others? I've been an old school MX rider for a long time.. I mainly ride Air Cooled 2 strokes but I think i'm going to like this RM.. It has power considering the lack of compression, i was still able to pull it up in 5th gear..