Cam plate question?

If anything is going to over run...its the cam gear... the crank is a free spinning mfkr...the cam gear can and does 'buy grace of chain slack' gets ahead and behind of the crank timing/tdc.... that's why you see the timing marks bouncing around, because the cam that spins the distributor is bouncing between the chain slack. Hence a cam regards as the chain breaks in..or stretches.. a lot of people will tell 2 degree of cam advance you cant really feel...cause it's gone in a 1000 miles or so with chain stretch.

Go check a gear drive motor and see how more solid the mark 'closely timed' is in the strobe flash.