Noise rockers Help??????

[393Clevor]

Well, after checking every thing 10 times I think I need lifters. But why would all of them make noise seems strange that 16 would be bad and not just a few or is there a better lifter than the ones that came with the cam?
302
XE274 cam, trick flow pushrods, comp roller tip rockers (rail type) 3/8 screw in studs, heads are 1970 302 with 1.85/1.54 SS valves, comp dual springs (recommended by comp for that cam), planed .030, ported and gasket matched, cc’ed to 55cc.

For the life of me I can’t get the rocker to quiet down. I had the heads re-done all new intake guides and 1 exhaust guide, 3-angel valve job and the springs set to spec. Still makes all kinds of noise above 2500 or so but better and 2 or 3 make noise when you first start it for about 20 seconds. Sounds like it has solids in it, very even clatter that gets louder as you increase the rpms. Oil psi is 55 cold on an idle 75 when you twist it with 5w30.
I checked the push rod length and had to run a shorter pushrod 6.750 I think. The valve to rocker geometry is right on the money. Made no difference after the heads and pushrods were re-installed. Running ½ turn preload on the lifters tried 1 turn ¼ turn nothing changed.

Tried the stock rail type rocker nothing changed.

Could the rockers be slamming the valves stems in a side-to-side motion? I looked at the rockers and they showed no signs of being slammed into the valve stem.

Guess I’ve spent enough money, looking for a simple fix.

Thanks for taking the time to read all this. Steve