can anybody assist with intake/exhaust centerline figures(point of maximum lift in crank degree's) for an early fifty's es2. I am trying to verify cam timing off the lifters. I get approx. inlet : 120 degree's A.T.D.C. exhaust : 110 degrees's B.T.D.C. I have a piston/gudgeon overheating problem that I think is a top ring, cylinder prep. problem. The machinist thinks its cam timing.