I just sold one of my warriors and am planning on getting a raptor 660. I've heard there were "issues" with the 01's, maybe 02's transmissions. Does any have any more detail on that, and know exactly which years are affected?
It's just the 01's. http://www.raptortranny.com/teardown1.php
This site shows exactly how to fix it, and what goes wrong.
Another issue is the One-way bearing.(both 01 and 02