Driveability issues on my slant.

On my A100 van I'm having a stalling problem when the engine is up to running temp @ 190 and get into stop and go traffic the temp slowly gets up to 200 -210 and starts running rough and dies and wouldn't restart . With the air cleaner off , looking down the holley i could see no gas squirting when working the throttle . Had to pour a little gas down the carb to start . ran rough till it cleared up and was on my way again. This has happened a few times . I changed the fuel pump (no help) I then replaced carb with another one I had put a kit in , It runs better but still stalls, like if i run it up to temp and then shut it off for a few minutes and try to restart. With the replacement carb it does restart but runs rough till it clears up. ( as in reving it up till seemingly gets some cooler gas in the carb ????) I have the stock intake and exhaust manifolds on it. The fuel line from the pump to the carb is the stock steel line in place. It also has a new fuel tank and filter. Any ideas or solutions would be helpful, i don't know what else to try. Would be nice to solve this problem before I swap in my new slant. Just seems the carb and fuel is getting to hot cooped up in the engine box.20180102_194350.jpg