Big Block ticking? Flat tappet cam. Normal?

FWIW, I ordered the hold down kit from 440 source. 200-1032 Aluminum Rocker Holddown Set
Avoid it at all costs, or just get studs as well.

For some reason their store is closed right now. Not sure if it is to do inventory or if they closed. I am not ordering right now so I don't need to call them.