Stumped and Frustrated with a Holley 670 Hesitation

I have always adjusted the floats running,, you can put a cloth under the carb to catch any spillage.. You could simply be running outta fuel cuz of low float level.. ?? .. jmo

Well that is simple enough, I guess I was thinking it would just come spraying out of there. Ok, that is for sure one of the things that I can make sure is correct first.