I'd get rid of the monster fuel and get some O'Donnell or Byrons. I had a ton of headaches with Trinity fuel, and they all disappeared when I switched to O'Donnell. It was like night and day. Cooler running and easy starting, not to mention my idle is much more stable than with the Trinity.

I fought the same symptoms you are having, and as an experienced tuner, I was at my wits end. I bought two new engines before I was convinced it was the fuel!!

The Trinity vapor locks the engine at a very low temp compared to other fuels. My engines were vapor locking at 220- 240F and would NOT restart until cool. I have not had this problem with O'Donnell fuel at all. Hot restarts are just as easy as when cold.