RE: G62 without carb insulator?
I made my own from 3 layers of 1/8 thick G10 epoxy board, epoxied together, since I did not have thicker material. My need was to rotate the carb for direct hookup to the servo, so I used a groove in the middle board to channel the pulse hole from the carb hole location to the cylinder hole location. Next I may try using 3 layers of 1/16 thick material to see if that is enough isolation for the carb from engine heat. Good luck.
Toni Clark has some very good tiops for engines.
Sincerely, Richard