I set the fuselage on the wing. I then set the wing on some blocks that are parallel to my bench. Took and measured both sides of the horizontal tail slot and they are the same. Checked incidence angles. Everything looks pretty good, and now would be the time to sand the saddle if it had needed it to get things aligned. I might be slighly less on my incidence than I wished for, but it's so close I'm not messing with success.