99 problems and a Ford ain't one.

I remember being told zero lash but I went with .010 because I know with heat metal expands. I did a compression check a while back ago on driver's bank. I want to say 170 psi was average. Haven't done passenger bank yet. I will say that #1 exhaust and #4, and #6 exhaust will at sometimes stay cold and other times function normally at operating temperature. That is why I am pretty sure there are valve issues.