JLB, we have 3 of the Aeroworks Edge ARF's at my field and they are all set up wrong (severe balloning on final while chopping the throttle). We added about 2* (1/8" under the 2 bottom engine mounting bolts) of up thrust and the airplane finally flew like it should. Tthere is so much down thrust in all 3 from the factory, that when you would roll the plane inverted at 1/2 throttle and go to full throttle, it would climb.....Shim 1/8" under the 2 bottom engine bolts and the pitch changes will go away....Aeroworks dropped the ball on this one..........