Agree. I am in the process of putting a set of those Hughes hold downs on my motor. Also has Hughes rockers. Rockers cam with 0.015 and 0.030 thick shims to locate the rockers on the shaft and set side play. I think it was the rocker set that came with the pedestal/shaft shims but they may have come with the rockers. You need those to get the geometry right. Then you can get the right pushrods made.
