440 break in noise from timing cover....we think....be gentle!

So, finally able to try and break in my 440.

Nothing overly crazy. Eddie heads, flat tappet cam, fancy dancy double roller timing chain

Ran for seconds and heard a racket coming from the timing area. Shut it down. Took off belt to eliminate water pump, still made noise, again only ran for seconds

I used a stock timing cover, with a summit double roller timing chain, and I am not sure anymore what brand of mechanical fuel pump

Anything obvious I should look for before I do a full tear down to see what i did wrong?

I have heard non factory crank pully bolts can contact cover? I think they were factory bolts but cannot confirm

Can a double roller timing set hit anything in a 440? As in, can it contact the cover (cover went on nicely at install)?

Can a fuel pump lever hit anything?

Just looking for 'simple' things to check for minimal tear down vs pulling engine and lighting everything on fire