HitecMan,
As noted the plane is really a fun design. The modifications mentioned will make it perform better. I would suggest adding about 2 to 3" to the fuse length also. This may require new sides which would need a couple of pieces additional balsa. Knife edge is all but non existant with the wing vertical. Tipping the wing 10 degrees or so will allow it to do better. Knife edge needs 1.Side area and 2.Speed to produce lift. Speed in this kind of plane can be a problem by producing flutter. Take a look a the Showtime from H-9 threads with the additional side area from the SFG's (side force generators). The plane is really an easy build with few parts and the one piece design means you are ready when you arrive at the field. There have been a few flyers that a one piece design is difficult to transport since the wing doesn't come off the fuselage. As others have mentioned there are many newer designs that perform 3D better. One of my personal favorites is the Mojo. It is a profile design and one of the best designs available today for 3D. Build time is about the same as the Uproar. Hope this helps.
EXCAP232