If you have 3/8x24 rocker adjuster screws try setting the preload hot at 1/4 to 1/3 of a turn from zero preload and let us know if that helps or not.
If you are running 7/16x20 size adjusters try between 1/10 and 1/4 turn preload hot scope twocents

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)