I have been doing some fine tuning with the rigging. I noticed that the flaps full up against the rear wing spar puts the flaps at -4 degrees (compared to the trailing upper skin of the wing). The flap edge is even with the bottom of the fuselage. But is not Reflex suppose to be -3. So should I leave it or set it to -3, which then the flap will not be resting against the spar.