yea I am a complete noob on 4 strokes . what about the fuel tank? are you getting plenty of flight time. looks like a 12oz I guess if the saito 125 will do everything you can do with the ultimate, thats going to be my choice. I was worried about adding weight to the nose. I refuse to add lead weight when a bigger motor will work better. So an up date on my build. I got the horizontal and vertical stab epoxied this evening did not have to do any sanding the stab came out perfect with the lower wing and the vertical stab was with in 1-2 mm of perfect.I figured if needed I can adjust any discrepencies with the stableizing wires later. Are you having to use many serve extensions. I am ordering the motor next week and the servos in 3 weeks. I am defently going to do smoke on this plane but not until i get her set up right and several flights under my belt. The smoke on a biplane is a must.