I was looking around when you posted this to see what you would have to get. If you need bearings, p/s, then you gotta get a crank. With the spec after that much running I think(not positive) that the crank pin eggs out.
I posted you some codes below from
www.carolinasrc.com should get you a brand new mill for $270 shipped if you use the coupon.
Personally I run the GRP tuned 21's but I would not get into a used motor for that much so maybe look into getting the new one. Hope this helps
If your Order is Between:You Save
iscount Code:
$100.00 - $199.99 $7.50RCJAN97
$200.00 - $299.99$15.00RCJAN915
$300.00 - $699.99$30.00RCJAN930
$700.00 + $65.00 RCJAN965