Help! Slant 6 keeps dying

Check the EFE valve under the intake (flap type valve on the exhaust) make sure it isn't stuck if equipped. Sounds like you are boiling the fuel in the carb and supply line to the carb. Make sure you have the fairly thick insulator gasket between the carb and intake, you may also slide a section of water noodle or pipe insulation over the exposed fuel line that runs along the intake and valve cover. If you have access also check to see what your total timing is with vacuum advance. If over 45 degrees try running with the vacuum advance plugged off and or adjusting the allen screw inside the vacuum pod all the way out till it skips and then thread in a turn.