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Keith, the first thing I did was blocked up the fuselage with the top longeron level. I purchased five digital levels from Home Depot and used double face tape to attach the levels to the bottom of the wings at the
roots and at the tips. This showed me that the wings were one degree different. It also showed that the individual wing had some twist in them.
I decided to lower the right wing 1/2 degree to start. To accomplish this I removed the rear spar fittings on the right side. Calculated the amount that the rear spar had to move down to change the incidence. Next step was to machine a bushing with the inside diamieter of the spar bolt. The spar fitting were drilled slightly over size. I elongated the holes in the spar fitting to get the proper distance in the spar plates and welded the bushings in.