RE: Impact
Since the plane didn't have any specific thrust line markings I went with the pre-molded markings to set the stab. ASSUMING this is zero then I have the stab at zero and initially set the main wing at +0.25. I also started with the CG 1/4" behind the wing tube.
First thing I found was the plane rolled to the left and pulled to the canopy in vertical dives (both fairly significantly). I then lowered the leading edge of the right wing pannel until the ailerons were centered with level flight. At this point the plane was still pulling to the canopy in vertical dives so I moved the CG back another 3/8" to 1/2". Even at this I still had a slight pull to the canopy which I mixed out with 3% down elevator on low throttle.
At this setting the stall turns were very difficult so I moved the CG back forward to around 1/2" to 5/8" behind the wing tube. This fixed the stall turn problem, however when inverted it still felt nose heavy and wanted to drop its nose quickly, even on the 45 degree upline. I then reduced the incidence of both wings about 5/8ths turn of the Gator adjusters. With this it seemed to be getting much better but at the time the wind 15 to 20 mph and it was hard to tell. BTW, I also reduced the down expo to make the down more sensitive to help reduce the feel of down elevator when inverted.
Another thing I noted was it required much more rudder throw on the four point than I was used to. I lowered the expo to about 33% and it still felt soft. So I increased the initial total throw from 2 1/2" to around 3+". This too helped get the rudder to where I'm used to it.
Once I get to fly on a calmer day I should know more.
KeithB