I'm curious how your balance worked out with the 160. I originally bought this model to fit my G2300, but when I saw the size of the motor box, I decided to go with my OS 1.08. It's not too late for me to change the engine to the 2300. I'm still working out some tuning issues with that engine that need to be resolved before I put it in this plane. The 1.08 and the 1.50 are similar in power, with the 1.50 having the edge. How did it fly on the 1.50? This plane is designed for a 90, but I only read of one such powered Sukhoi. Everyone is going bigger.