My grandpas 51 did this (Vapor Lock) a-lot in Phoenix, he took a tubing binder and some stainless steel line 3/8" and coiled it around a piece of pipe and bent it to where the coil went down, then towards the end put a 90 in it and brought it back up so both ends met at the same height, this coiled up tubing he then put into a steel coffee can. He connected his fuel line in one end and ran the other over to the carb, and would fill the coffee can with ice. When it all melted he would just add more ice and it got him around in the heat much easier and it is something to maybe look into making to save some resting time, driving and enjoying the day. Just a thought. Kenn