I just bought a 95 XCR 600 and when you start it up it runs fine at idle but then you go to take off and it fouls the plugs. Put new ones in and it is good to go. Any ideas? It is a pain in the butt to have to keep cleaning a set of plugs. BTW the guy I bought it from is a personal friend who has a few machines and he said he adjusted the choke so he probably did that already.