A vaugely related THING , Mod. states that Down Elevator T E 3/16 on Patternmasters etc to get even turns . !
On my strega I threw maybe 3/32 pitch across the full chord ( stab. & elevators ) The thing turns good , EVEN . even ! .
Thus Id think a notch of + incidence , on the tailplane ( and Elev. rootfairings if it has them ) Due to the HIGH tailplane ,
should get the turn even with the stab. & elevators ' in line ' with Ea Other .
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About 2.5 mm , 2 anyway . So if the chords 6 in O.A. , with elevators taped / stuck neutral & L E centerline marked , you ruberband / tape
a two or tree foot straight light thing forward , check the gap is + Fr. & R. . Getting real tricky , you use one over & under - parrallel .
THUS , four times Fwd. , the measure is fourfold , but any error is 1/4 fold . SO if the stick was up 1/4 in the incidance would be 1/16 th inch . !
As the sucker sits on the Fuse. Top Line , its real easy to align , just dressing the fuse top rear sides with a sanding block / stick . Warilly ! .