It turned into a bit of a long day as we mounted the wings for the first time, drilled the rear spar, marked the nut plates and drilled the tank brackets, then pulled the wings off, and I worked the rest of the day finishing all the nut plates and brackets off so we can mount them back for good later this week.
First off, It was great having a good crew of help. Marv Scott one of our EAA chapter tech counselors, Allan Scott, RV-8 builder and Marv's brother, and Curt Bryan, retired Navy, RV-4 builder came to help out. Lots of hands make it a fairly painless job!
The wings slid in easily with some wiggling at the tips. We had some ground down 7/16 pins from Pete another RV-8A builder on the field to secure the wings in place.
Wings are on by
akarmy, on Flickr
Then lots of measuring and conversing commenced! No shortage of pictures of head scratching as we considered the various measurements and what they meant.
First the measurement from each tip to tail was taken to get them symmetric.
Pondering a measurement by
akarmy, on Flickr
Then the plumb bobs come out to check the sweep. Got it to within 1/32 (or half the width of the string we were using) and symmetric both sides. I think that will do.
Checking sweep by
akarmy, on Flickr
Then we checked and set the incidence. I had a standard bubble level, a digital "smart" level, and a Starrett engineering level. Guess what they said, all were different! When the smart level was showing zero, the Starrett was full scale off. It was quite a bit more sensitive and the perfect tool for the job.
Adjusting incidence by
akarmy, on Flickr
My favorite part was when Marv suggested we check the wings just inboard of the tips as well. because you can't do anything about it if it's off, but it will give you something to think about tonight!

lucky for me they were dead on level just like the root so no twist in the wing panels, YEA.
Finally it was time to drill the rear spar bolt.
Drilling the rear spar by
akarmy, on Flickr
We started small and worked up in size and then final reamed the hole.
Untitled by
akarmy, on Flickr
As I said, in the end there was a lot of head scratching as we went through each step, but we kept working fairly fast in spite of that. We had the wings on and back off in 3 hours. This is my favorite picture from the day.
Head scratching by
akarmy, on Flickr
Thanks to Allan for taking the pictures while I was crawling around drilling holes and making measurements.