Plumper? I'd say this heavy weight is down right FAT!!!! Got out tonight and the UCD is bigger and badder than ever. Couldn't notice the additional 5 oz. Spent most of the evening shakeing it down, tweak here, adjustment there to the control surfaces. Gotta have those trim tabs centered, all mechanical. SWEET!!!! Little too loud though, 102 DB. Going to have to come up with a muffler or figure a way to attach the stock one if I want to fly at the field. The rocker clearance setting adjustment was very noticeable, lots of power. Okay, I'm happy now. later, Joe