The right wing went on a little quicker since we knew what needed to be trimmed and filed away. The right skin needed to lose a little more than the left skin did - up to a little more than 1/8" in some spots. The stubs needed to be filed too.
I used a deburring wheel and file to smooth out the skin edge and got it OK for fitting. But I'm planning on doing a straighter job of filing at some point.
Here's a tip: When you're feeling around the holes with your index finger to get a feel for how the spars and things are lining up, don't tell your partner to pull on the wing before removing your finger from the hole, which now becomes a guillotine.
Afterwards, we measured everything again and determined that the camper and RV-12 can fit together, and the camper might even be able to be next to the plane, instead of at the front of the T-hangar, which works fine for winter storage, but not so much with the frequent movement during camping rental season.