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I do to spec 0.12in but what I do leave tight alitthe but you need to re adjust it warm to quite those valves is a better way . I did that way on my truck.
Set to TDC compression on #1and wiggle rocker arms 1, 2, 4, 6... turn ONE turn and wiggle 3, 5, 7, 8. As long as all the rockers will wiggle and are not tight... good enough to start er up.
Thanks for the reply!