I've got a YZ450F that has some damage to the intake valves and the intake cam journals & caps. One option is to purchase all new parts and rebuild, but I wanted to know if anyone has any contacts to rebuild the head. A friend of mine said that several years ago he had an outfit rebuild a head for an Honda XR100 that he used to have. Can anyone recommend a reputible shop in the USA that could do this sort of work? Currently, I am looking at about $600-$800 to purchase new parts and rebuild (on my own). I'm looking to save a few bucks, but still get a decent rebuild. Thanks.