I finally got around to changing the head gasket on my 400. I got to puting the cam saddles on and broke (bad torque wrench) one of the 5mm allen head bolts off in the head. Im now faced with 2 options. 1 Go to a machine shop and have them pull it, or try to extract it myself. 2 Bad - helicoil Im really debating to try to pull it myself. Is it hard? One other question. The manual shows a different collored pin on the cam chain to mark the first link. Mine doesnt have this, instead the plate is marked 1a, or a1, something like that. Is that the first like?