Thanx for the info! I hope to maybe finish it today. The U Can Do is sorta weird in that the CG range is from 2 to 4 inches from the LE.
Where the D-tube ends (you can feel it thru the covering) is at about 3 inches. I am gonna try and make the CG on this part or a tad forward of it. Of course when I really get used to this plane, a Saito 72 will go in it and I will move the CG back some. But first, I have to get used to the huge control surfaces it has. I'm thinking of roughly 3/4 to 1 inch travel on the elevator and ailerons. Nothing worse than a squirrely model on its maiden flight!

Dave...