New rebuild....but tic..tic...tic

The recommended procedure is to measure at all 4 corners, in case you have some deck slope front-to-rear on either side. Then average the 4 numbers. I would not expect intake and exhaust to be any different, unless something was up with the valves and how the heads and valves were worked. If you lay a good straight edge across the valve tips with the rockers off, and look for tip-to-tip variations, that will give you direct read on any valve tip-to-tip variations.

IMHO, see where you end up with .060" preload as well as .080".... that is near the middle of the common lifter movement range that I think will usually be in most lifters. (common... think.... usually... most.... Boy, I put I put a lot of qualifiers in that sentence! LOL) Not saying .080" is not a good number.... it's just that .060" has been in my wee brain for years.

And check that the ball size is the same on any pushrod.