Support

Van's customer support got back to me by this morning... Those guys have excellent support... They said up to an inch of sweep would probably not be a big deal... If I want the 1/8 off I have to pull the wings off and file the end of the spar back... Which I am not going to do.

Instead, made up drill jig and bushings to drill and ream the rear spar hole. Here are some photos of the jig/bushing/ream clamped into position, an indication of where the center of the hole will be, and an overall collection of the jig and tooling parts and my chicken scratch sketch which started things off.

I'll think about it and double check things probably tomorrow before I commit to drilling and reaming the hole in the rear spar/fusalage attachment.