The "seventh" Z I presume is the root end Z, in which case it's a Van's screw-up, but not to worry, they'll never address it!
Here's how to deal with it. Get a fresh piece of Z. (You'll need to order from Van's, and some extra can be handy making brackets and such later on. If you want to salvage the existing piece, you'll have to live with slotting the 1/8 hole that you use to cleco to the baffle.) Remark the centerlines on each flange. Slip the bracket into position and shuffle it so the baffle and spar centerlines split the difference in misalignment. The hole pattern punched in the spar is about 3/32 too far inboard of it's proper position to pick up the exact centerline. Clamp, clamp, clamp. Believe me, if you don't there's enough movement from drilling pressure to throw off final hole congruity. Match drill baffle and spar holes to the flanges.
When you're installing platenuts on the other six brackets, keep in mind this 7th bracket simply has the through holes.
Had to do it on four RV-7s (same wing as -8s).
John Siebold
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