Tuning a Proform/Holley carb, what parts and tools?

If fuel is coming out of the vents, it's only three possible things.
1. Float level too high.
2. Float is junk.
3. Needle and seat is junk.

That's it. A blown power valve will make it hard to hot start and make it act like its flooded. As long as you set the power valve opening by CRUISE vacuum and NOT idle vacuum you'll be ok. Probably and 8.5 is a good starting point. A bigger number power valve has zero affect on idle and hot start fuel. A blown PV will.

Damn, I just thought of a 4th. Could be dirt in the system. That would be needle and seat related of course.

That's is. There's not much to it. If fuel is just coming out of the booster, that is a float adjustment or bad float.