When I built my electric version, I stick built the tailfeathers and ailerons. I also added a full length scratch built hatch. I replaced the plywood root ribs with balsa and used lightweight covering. AUW ready to fly was 4lbs 6ozs. Flew like a feather. Although, at times, I felt it was too light to good snaps and blenders etc.

I'll try to dig up some pics later. I think I have the plans for the tailfeathers in an autocad format (I think) too.