RE: Impact
As a giude to what I have done as far as incidences these are some of my measurements.
with fuselage sitting in my jig the bottom of the fuse (lowest part just behind chin cowl is 2 mm above the surface of the bench. The tailpost is 47mm above the surface of the bench. At that point incidence was set to .25degreees positive on wing and zero on the tailplane. Then from here I dropped the rear of the tailplane by 2mm. I dont know what the relationship is now between wing and tailplane but I would guess between 0.1-0.2 degrees. The angle the fuselage presents to the horizon is extremely important and I cant stress that enough. You need to make sure that is correct as well instead of just looking at relativity between wing and tailplane. These setting are pretty close to the mark IMHO. By lifting the rear of thte fuse I in effect added more down thrust which it required.
Cheers,
Peter