This photo shows the alignment of the drill. The assembly was drilled in several stages, with the final being the 11/16th that we reamed to just fit the AN3-15 bolt (longer than the one called for in the manual). We noticed that the AN3-13 bolt left threads bearing on the torque tube and mounting bracket. With the AN3-15, the bolt's shank is bearing on both the torque tube and the mounting bracket. To ensure the nut didn't bottom on the threads, we added a thick AN-13 washer.

12/8/2022   Picture 588