Lower port insert firewall connector 3.

Stainless allen cap screws with adhesive patch are installed on top of the supplied bent rectangular washers after the cover was thinned a little, (screws were just a tad too short, but the longest McMaster offered), with a plastic washer on the bottom to hold the screw captive.
The aluminium standoff jackscrews hex needed shortening which was done on our small Unimat lathe.
Y10-10-04