I sold one to a guy with a Fuji 64 who agreed to test it with the heavier engine and see how it flies with more weight.

So far he has assembled it but not flown it. The plane (he says) is 19.5 lbs, which is very heavy for this plane. I'm still waiting to hear back from him on flying characteristics. If it flies ok with that engine then almost anything is fair game.

TF