[fastd]

I'd be interested to know how the quick cool insulator works for you. What is it exactly? From the picture and the text it looks like a holley type heat shield and a spacer that "made from a poly-core material sandwiched between two layers of aluminum to reduce heat transfer"...

I had the same problem hot/hard start problems but no bucking when it was hot and already running.

I added the holley heat shield and didn't really help at all. But the 1/2" phenolic spacer really works (I assume it also makes the heat shield work more effectively); don't minimize the potentially benefits.

Interesting I have a big block Pontiac Firebird that was also giving me same problems; I pulled out the fuel system and added:
Aeromotive In tank fuel pump, return line, PTFE fuel lines, insulated taped the fuel lines around the engine heat and still had the same hot/hard start problems!!! (But it helped vapor lock issues).

BUT, adding that silly little phenolic spacer really fixed the hot/hard start...I only recently did it so I haven't had it installed for a humid NC summer day, but so far so good and that spacer was the best $40 I have ever spent.