Built mine with a Saito 1.20. I mounted the engine inverted. I hated to cut the side of that nice glass cowl!!!! I cut out the original servo tray so I could run a servo for each elevator half (CF pushrods), and ran kevlar pull-pull on the rudder. You WILL NEED to attach the aileron servo mount blocks to the hatch cover with servo screws. DO NOT trust epoxy on this attach. I didn't fool with the wing struts. The attchment is too flimsy. Mine flew like a big ol baby at half throttle, and became fully aerobatic at full throttle. Plane glides nicely on approach. I had to restripe mine, all of the striping came off while I was shrinking the covering.