Hot engine hard to re-start Vapor Lock???

[BAsque1]

I know this thread has been abundantly discussed, but I would like to revisit it and get new perspectives. I drive my 427 FE S/O equipped with a Holley 770 carb. It is fed via a mechanical pump with constant 7lbs of pressure. I removed a faulty and not needed fuel pressure regulator and installed a brand new in line gas filter.

Tested the car for about 1 hr and the temp remained between 180-200 F. If I turn the engine off it is really hard to restart, the cooling fans deploy automatically and after 15 minutes or so it will start. This is really annoying and at times embarrasing.

Conventional wisdom points to possible over boiling of the gas in the line or gas bowls in the carb, hence vapor lock. I have been suggested to distance the fuel lines as much as possible to heat radiation areas in the engine, try but cannot be done 100%. Others suggest a phenolic carb spacer, I can only use a 1/2" spacer due to hood and air cleaner clearance, I already have a turkey pan.

I used to have a similar problem back in the 60's with a rally Volvo in Puerto Rico and I installed a cool can filled with dry ice, it worked fine then. I am in NY now and I was wondering if this could improve my situation.
I will be thankful for your input.
Cheers
Lou