Add/replace correct fasteners, washers, torque nuts to see if there is any excessive drag. Discovered that plan sheet XNB-W07 calls out a main aileron pushrod made from SNB-C03-09 rod stock with SNB-C03-10 pushrod end fittings. The kit was not supplied with either but with a SNX-C05-05 dual stick aileron pushrod. I had purchased Aurora female rod ends and additional bushings, fitting those to the supplied dual stick aileron pushrod. The threaded end of the pushrod to the witness mark of the Aurora bearings measure 81-1/2 inches between bearing centers. The plan sheet indicates this dimension should be 89-23/32 inches. Wrote to Sonex to clarify the 8 inch discrepancy. Sonex acknowledged the packing list error and sent the rod stock and end fittings immediately.