Hello, im deciding between a yz426f or a yz250f. But im just worried about that since the bike im looking at is a 2002, but do they still make parts for the 426? Also what about reliablility? Im mainly looking for any engine problems. Has anybody had any problems with the valves? Also, is the bike heavier than a 450? How many gears does the yz426f have? Also, how is the suspension. is the suspension good for jumping on the 426? Also is it an all around good bike? Or would you go with the yz250f. thanks! Would it be better just to buy a newer 250f, or maybe a 450f? All comments would be apreciated. Thanks for the advice!!!!!