I'm the proud owner of an '05 WR450, but I'm worried I may have inadvertenly hurt my machine while changing my oil. So... I change my oil and filter last night, fill 'er back up with Yamalube, then give a couple extra cranks on my main oil drain bolt (12mm bolt at bottom/rear corner of crankcase) to make sure it is nice and tight. As I'm doing this, the bolt starts to spin more freely, and so I think that I stripped it. I have not pulled the bolt out to inspect yet b/c this all occurred late last night, but what are the chances that I've actually stripped the female (crankcase) side threads and not just the bolt itself? If so, what type of recourse do I have to resolve this. Can you "re-tap" your crankcase? I'm worried now (sitting here at work), please give me a holler if you guys have any ideas/experience with this. Thanks.