Hello people. Just bought a blown up 2003 yz450 with a golf ball sized hole in the front of the crank case where the rod decided to exit. Just wondering what others experience's are with have such holes repaired by a welder? I haven't split the cases yet but the hole is mostly on the right hand side with a small chunk out of the other. Is there any important passages in the front part of the case that may have been left where ever the engine let go? Does anyone have a good place to find used cases. Ebay has none right now. Thanks.