ProComp/Speedmaster aluminum heads

If you can use the shims to raise the shafts and get a picture without busting a saddle you can do that. The issue with the shim like that is they only raise the shaft and they don’t move the shaft away from the valve. Using those shims will at least let you see which way you need to go, and you have them.
Did you read post 1374 the second to the last one on the last page?..