I have had my UCD 46 for a few years and never felt it was a great 3D plane. I just switch from an OS 70 surpass to an OS 91FX with a 16 x 5 Zinger. After the motor breaks in I will be adding a V30 Perry pump and try the APC wide 15 & 16 x 4 props. I was looking through the posts on this thread for set info. (thanks guys) I set it up per the GP manual with the CG at 6 inches. I had to add 4.0 oz of lead to the tail. Now this plane rocks, it will do the best wall I have ever seen. Snaps up with no climb and will just sit at about 10 feet of the deck. I now can pogo it up a down like it has a DA 50 in it. Rock steady and will knife edge loop as good as my profile Katana.

Using a JR 9303 with 3 flight modes, 3D Max travel & 100% Expo, Low rate with 40% Expo and really low rate set up for pattern with 20% Expo. Set up to the GP manual and the pattern settings are set for just enough to do a good knife edge. I love this setup. I think all along I had the CG to far forward.

Included some pictures of my ARF bashed UCD XL. Covering was striped to re-glue and fiberglass the center section. I wanted to check the construction but found no issues. I did cut the trailing edges square and add a square strip back on to keep the edges straight. I am a big fan of square edge trailing edges for 3D. I can fly it WOT with no flutter. I also added hard-points (dowls) at each control horns. I went with H9 Purple Transparent Lites. I also did my own thing on the cowl cutouts for cooling. Was inspired by the way a hockey goalie facemask looks. I am glad I was not watching Star Wars when I was cutting it out. Had no problem stuffing the 91 in it. It flys like the UCD 60 with a YS110(OLLE from Sweden) in the video a few post up.