Definitely needed a helper for this section! I had a few tables that the fuselage and tail were resting on. To get the halves to align, what I found to work best is to block up the tail at two points with an assortment of scrap wood with a plywood sheet on top to match the angle of the skin so I didn't accidentally bang a notch into the tail section. After some shimming, I was able to get it pretty much exactly aligned so I could just slide the tables together and they would mate precisely. When doing this just have someone check both sides that all the side skins are lapping in the correct stacking, and that the bottom tabs don't get smashed or bent while finessing the two halves together. It takes a bit of pulling and light shaking to get them to snap together, and I can definitely see something getting bent if they're not overlapping correctly first. Everything aligned beautifully once you can get the dimples to match up and snap together. I'm still amazed that Vans can engineer the tolerances to be as tight as they are, especially with such large parts with stacking materials.