David it no flutter what so ever and where it broke had nothing to do with glue. It broke on the leading edge of the stab 1 1/2 in. out from the fuse. I have read of some others doing the same thing. But like Edgeman55 I have flown several UCD's that were great. I just happen to get one with a flaw in it. I am waiting on Great Planes, they recieved the plane on Friday. When I called them, in the begining they said send it back and no questions asked. So kinda makes me wonder if they had some bad ones? None the less I am sure they will replace it.
And when they do I will build another one, BUT I will brace that tail section as pictured above!

Edgman55 I hope I get one like yours this time.

Chuck