Well, a little update. I fired up the Roto 35 today. Nice engine. Straight out of the box the thing ran excellent and idles very nice. I ran it with an 18-10 prop and I am not so sure it won't need a 20 once it is broken in. Kinda bummed me out though as I am going to have to cut a hole in the side of the cowl for the front of the muffler to clear. The cowl on that plane is big enough to swallow a DA 75 but the Roto's muffler misses clearing at the leading edge by about 1/4 inch.

Another question for those of you that are building this bird. I have had 0 luck finding the blind nuts that the wing struts attach to. Any one else having this problem? More to the point, anyone able to tell me where they are located? The point in the assy. manual is wrong, at least on my model.