Hello all, I have to replace the crankshaft on my 2000 Yamaha 426. Is it worthwhile to put a 2001 crank in it to eliminate the problem with the keyway for the drive gear? What else would I need to change? And while I have it apart, any other ideas for upgrades? I have replaced the clutch basket with an 01 and also the shift lever to get away from having the pin fall out. Thanks for the help.