It was an idea I was toying with using carbon tube for ailerons. I cant decide which way to do it yet, the wire for elevators seem to be just fine. throttle setup I used was what was supplied in the kit(solid rod). Since the plane is virtually built for a direct fit of the saito 125 it was an easy install.

If I go to carbon tube I will epoxy or CA glue 2-56 threaded metal rod into it and use metal clevises to attach to control links. Might be easier to purchase better quality metal rods instead of using carbon.

I dont know about using the 150 in this plane, Weight for the 150 appears to be almost 10 oz. more not including the muffler. For my setup that might make it difficult to balance. You would definatly have to place receiver battery at the back of the canopy.

The 125 so far seems to be more than enough power even running extremely rich, but if you decide on the 150 I would like to hear the results. I am fairly new to 4-stroke saitos so hopefully some others can answer that better.

One thing you definatly dont have to worry about is prop size on this plane, there is plenty of ground clearance.