So one of the things I noticed straight away when fitting the brackets to the wing is that the pieces actually made contact with the top skin rivets at the rear spar. It just didn't sit right with me that they made contact. I felt that there should be just a little bit of clearance between them. Also I noticed that the angle supports need to be slightly rounded to follow the inside radius of the rear spar so that they sit flush.
First step I rounded the support angle top edge to the inside
radius of the rear spar. Then I refit the assembly. The clearance from
the skin rivet is still there. So I very carefully used the scotchbrite wheel and removed about 1/32" of material where contact was being
made. I did not want to remove too much and compromise strength or
introduce stress points.
In the end the fit was perfect
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