Heres my report-- easy build. Cowling needed to be re-inforced where landing gear goes through. A little wire embedded in fiberglass keeps it from cracking. With care in mounting and fitting, an os 61 does not need a muffler spacer-- just fits. nstructions are not too clear on flying wires as they are in german, but not toodifficul to figure out.

Flies great--tracks true- rolls are axial, great vertical. Does everything one would want in a sport flyer. Cannot beat the price or the quality of the kit.