My buddies 426 ran great all summer and when went and rode it last week, it seemed to wanna choke itself out trying to leave idle. It will rev free in neutral but when you take off in first or try to climb a hill and it puts a load on the engine, it chokes out and dies... It still runs good, just does that cutting out... iv be told the carb or valves. I was wondering if anyone has had a very similar problem and could be an easy fix before going to the dealer... Thanks!