After a month I finally got my left spar back from Van's today. The problem was that the top and bottom flanges were bent incorrectly. OK, I understand that things happen- no problem.
So far, through this build, I have been amazed by the quality and accuracy of Van's parts. Boy am I disappointed with the quality of their fix though.
Problem #1: Now my flanges look like a couple of drunken snakes. I can't leave them like that or my skins will have major dips in them when riveted on. So I guess I have to bend the flanges myself after all and try to straighten them out.
Problem #2: Before discovering the flange problem the first time, I had already riveted on all the nutplates. Van's said "No problem, we will take them off if we have to." BIG MISTAKE. Whoever drilled them out, doesn't know how to drill out rivets and so now I have 132 wallered out holes where they drilled right through the entire rivet, most of the time off-center. So now I have to drill and countersink all new rivet holes for the nutplates and make my flanges look like Swiss cheese.