RE: GT 80 Question
I would keep running it with the 24x10. I ran mine with a Bolly 24x12 and it did well, though a 24x10 would have been better. My engine also sprayed fuel on throttle up. What I did was glue a piece of foam behind the carb so the foam would absorb the fuel instead of the fuselage structure. The foam eventually gets eaten away but costs very little to replace on occasion.