I promised some photos of why I need to do some hand filing and here they are. Image 1 shows the overall installation of the Inboard and Outboard Brackets. Image 2 is a closeup of the lower corner of the Inboard Bracket and shows that there won't be much clearance to what will eventually be the bucked head of a rivet. The ribs will be riveted in place first and the the brackets will be riveted to the ribs so I need the clearance. Image 3 shows the the lower corner of the Outboard Bracket and you can see that it is nearly in contact with the shims and backup structure around the leading edge cutout.
Inboard and Outboard Landing Light Brackets Cleco'd in Plave
Inboard Bracket Showing Tight Fit with Eventual Bucked Rivets
Outboard Bracket Showing Tight Clearance with Landing Ligth Cutout Structure
