So I recently got a great deal on a 400ex because numberous mechanics could not get it to run. Turns out the timing was off and I got in running right away. However and hour later the timing was too tight again. Turns out the headbolt studs were stripped and the head gasket was leaking...

ANYWAYS, the camshaft also slid over and one of the lobes wore at the head. After inspecting the situation, I also noticed holes in the head at each end of the cam in which dowels or something should go in to keep the cam in place... I can't find the part number on any site(such as bikebandit.com) I'm lost please help!