sandal,

Someone on here might be able to give you good advise on building the butterfly to make it lighter on its tail. It seems that most all of us that has built one has came out tail heavy.
I only have 1 and half builds under my belt, so my thoughts might not be the safe way. But if I built another, and I probably will, I would cut lightning holes on the top and bottom of fuse, back half. I would also search for some lighter balsa stick to build the elev, rudder. And another thing that may have added weight to mine is the amount of epoxy I used on the elev., rudder.

One more thought, if you plan to build it for electric, you can save weight, by not fuel proofing. Another thing that I did that I shoulnd have, was fuel proofed the hole butterfly with many coats.

This gives me an idea. I would like to do a Light Butterfly build! What do you guys think? We could see who can make it lightest!