Mated right wing. Althought the book says you CAN do one wing at a time, after seeing it like this, I don't feel comfortable doing it this way. I've measured a few times and I think I can just squeeze both wings on in the garage. Worst case I have to stick one wing out the door for a day. Although I have the side propped up, I can't help by believe there's likely a twist introduced somewhere. Really want to get both wings on a drilled.