RE: cloud dancer 120
Glad to see you have the new cd in the air. You are right, the roll rate is a bit slow. If I build another one, I will add a little more ailerone surface, but this is not a 3-D trickster. It is a gentle great flying aerobat.
I also beefed up the fuse. The sides are lite ply instead of the stick construction called for. I had previously reinforced my cd 60 the same way after a dead stick hard landing broke the fuse in half. It actually helped my balance a little since I am running oversize engines. As you said the cd flies very light and the extra weight was not noticeable at all.
Have fun, the Cloud Dancer will make you look better than you are.