That is really interesting about the spoilers for HA KE. I might try that. I have been reading a lot of places that people will use them pretty much all the time for walls (To get a quicker stall and less creep up and more slide), harriers (obvious), and waterfalls (This one does not make sense to me.. but.. worth a shot). Since mine tucks to the wheels it seems like it would make sense to use flaps, but, if you correct that with elevator mix maybe the spoilers could help with other effects as you say to keep it from nosing up more or less when you turn. I am sure it is somewhat cg dependent. When you say pitch up.. are you meaning during ke it is going to the canopy? Or do you mean standing up? Pitching is always movement to canopy and wheels right? Or does it change with direction of plane and mean up and down? I have always thought it was canopy wheel movement, but, could be wrong.

I have seen some people doing tornados or ascending flat spins. That is something I have always wanted to do. I have seen them come down in a flat spin slowly.. then tighten and speed it up once it got about 3 ft from the ground and go back up in the same flat spin.. Looks incredible.

The landing gear block is somewhat week in its design and I took the wheel pants off so they would not jab my wing when they would fold up under the plane and pulled that block off with it. Have seen this with a lot of planes. I have had a lot of luck with this last plane though. I put some extra triangle stock in there and after glueing that.. I poored some epoxy mixed with a few drops of alcohol to thin the epoxy and glaze the block area all around the corners and sides. I have beat the heck out of this plane on harrier landings and landing in tall grass. No problems yet with ucd2.

As far as getting rid of the ucd.. yes.. it does have poor ke handling and maybe too much lift that give it wing rock on harriers, but, I have found it to be quite controllable and a great learning tool for correcting dipping wings and things not being perfect during harrier. I am quite confident that if you get good at this plane doing rolling harriers, harriers, and ha ke flight that it will make you a better pilot and you will be able to fly a lot more planes in 3d. I think the plane is a blast and it is really not that bad overall and quite cabable of doing anything you can do with another plane. You name it and I have seen it done with the ucd. It is an awesome second plane after a trainer that can fly almost as easy as a trainer, but, keep you entertained for a long time.
That is my opinion anyways.