Got to cleaning out some of the rust and noticed that I can't turn the camshaft. Tried to use the cam gear from a b7 head to turn it and nothing. Backed out all the valve adjusters to clean the threads and give me more clearance, then torqued it to 27 ft lbs and tried again and still can't turn the camshaft. The force over comes the torque and loosens it every time. Pics of some cam wear, is this normal? Video of me jiggling stuff around. The rockers on intake 4 and exhaust 1 have no movement, even with the screws backed all the way out.