I am picking up a used RS125 (1995-98) for racing Lightweight novice next season. I have three choices Honda RS125, Aprilia RS125 and Yamaha TZ125. Which of these is the best in terms of "easiest to maintain" and availablility of spares? How easy is it to learn how to do inspections and top/bottom end rebuilds? What should I look for when making the purchase? I am a mantainence newbie but I do handle few basic tasks on my bikes right now so I am hoping I can handle this. Any advice from racers experienced with two strokes will be much appreciated :) Thanks very much! Kevin 2002 CBR600 F4i (street) 1995 CBR600 F3 (track)