My MXB has an Infinity 18 engine. For those of you with experience with the Infinity, does it tend to run hotter than others like the SH? If I tune to temps around 230, it is horribly rich. At those temps, it bogs like crazy, is hard to keep running and spits raw fuel out the exhaust when I pick it up and rev the engine. If I tune it until it sounds good and runs well, the temps are like 270 or 280. But like that I have to be very careful when the tank gets low or I am running on rough terrain and getting air bubbles. I have caught the temps over 300 a few times. The engine still seems to be fine and has decent pinch. I can pick up the car by the pull start. But I am worried that I am going to fry the engine or at the least dramatically shorten its life. Also, I have had to fix the pullstart a couple times, and I think the temps are causing that.

By the way, I am positive that I do not have any air leaks. I have replaced all the fuel lines, I have sealed the engine and the carb, all the fuel line connections are tight and zip-tied, the tank is sealing well and I push the lid down every single time.

I am running Wildcat Eliminator 20% and an OS A3 plug.
Thanks,

Bryan