Initial timing at 50???

Cranky said

.018 out....shouldn't be lacking for compression! You might check your lights with someone else to see if they show the same thing as there's or have them check your timing with their light. I did that the first time I ran across a similar situation.

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At .018 out of the hole, a stock chamber with a clean up cut and depending on gasket thickness you are about 9, maybe 9.5:1 at best. I've said it before, if you want 10.5:1 the piston needs to be .040-.050 out of the hole, depending on the thickness of the gasket.