Bubba, I had a 120 4S on mine, changed to a ST90, reducing weight and wingloading. Mine also has two mini servos in the tail for split elevators. It came to life with the lighter 2S engine with a 14X6 prop.

I added yellow diamonds to the bottom wing to help with orientation. But at 57 years, the floaters in the eye on cloudy days makes it harder to see with so much blue. Am going towards red and yellow airplanes. It's hell getting older. That's why I kept my Pitts, the red and white color scheme makes it really easy to see. Really liked the Ultimate, even considered a big one, but am looking at a Large red and yellow extra 330.

Happy Landings.