I have recently bought a 1986 560 sel. When I bought the car the engine had been removed from the vehical and the heads taken off. The work was done due to a timing chain guide breaking and causing the engine to skip time and bend some valves. I want to rebuild the motor, but I dont have very much experience with overhead cams and would appreciate it if some one could help tell me where I might find the timing marks on the cams and how to align them. Thanks for your help.

Rick