[undy]

I don't think you have a "gas boiling in the carb" problem, just a hunch.

What type of fuel pump are you running (elec/mech, mfr and model)?
Are you running a return fuel system?
Fuel pressure regulator (bypass or single line)?
Fuel pressure gauge?
What fuel pressure are you running while the car's sitting and idling?
Any drivability problems?


Possibilities:

1. trash under the carb's float bowl inlet valve(s).
2. Creeping fuel pressure at idle, overpowering the float bowl inlet valve(s)
3. Leaking carb w/loose screws and/or leaking gaskets.. just to mention a few. Get back to me answering my initial questions and we can pin it down a little better.

Dave