I decided to check the valves on my bike today and was baffled at what I found. It appears to me that someone tried to go in and give it YZF timing. Somewhere during the process they got both cams off by one tooth ending up with EX cam in the stock position and the IN cam 1 tooth retarded. Resulting in what would be retarded YZF timing. Before I go moving things around I thought it best if I post photos here and ask for opinions. The bike is a 2000 WR400. I believe it to be stock other than bolt on and free mods like pipe, airbox mod, throttle stop. There ARE tooling marks on the head bolts so for all I know there's a hi-comp piston in there. The jetting seems fat to me with a 180 main but it runs fine with it. It likes to get hot at slower speeds- more so than other WRs I ride with. I believe retarded cam timing would explain both of those. Ok.. on to the photos. What should I do from here?