I've made a couple of changes to my U Can Do to try and improve its behavior.

The first was to run a program to mvoe the ailerons up as spoilers with up elevator and down with down elevator (basically what Mecam suggested) This definitely improved the elevators and harriers, but there was still a bit of wing rock.

Next I took the wingtips off. This helped the plane stall and spin a bit better. I managed to get a climbing flat spin once, but I can't seem to duplicate it. I'm running the CG at 6", I'll probably move it back some more.

Last change was to add a strake in front of the fin. This is an attempt to tame the strong pitch to the belly with rudder input. One of the fixes for a pitch to the belly is to lower the stab. It's not all that easy to do, so I thought that adding some fuselage side area above the stab might have the same effect. I'll find out if it's any help tomorrow.

David