.030" longer push rods and where to find them.

PRH said
I’ve never seen one of those spacers even mildly worn from a factory set up.

Also, there is usually a fair amount of side to side clearance when using 100% stock parts on stock heads.

I did a quick look-see back at the 1st page only. I could be mistaken but does it not appear that he is using aftermarket hold downs with stock rocker arms? Maybe has things wedged a might tight?