Second brand new Holley carb flooding?

I agree
Too much fuel pressure or dirt in the needle & seat

Trash & debri is the most common problem for Holley flooding.
It doesn't take much.

Doesn't matter the brand of carb, the above issues will screw up any carb, not just Holley..

I bet this carb had **** in it from the get go.....Ya might want to take it apart and check it...

If it's got chit in it, it's awful hard for it to move upstream to the needle and seat..