This is very hard to get to and took some time but I got the upper bracket installed. Had to match drill another hole for the cherrymax rivits. Installed the rivits with hand squeezer
The bottom bracket became a problem when I discovered that the hand squeezer did not have enough room. Drilled out the holes on the lower longeron to 11/64 to take #8 screws.. Installed using 3 #8 threaded screws and nylon locks
Attached the mounting plate and ELT to the angles
Need to decide how I want to run the Antenna coax cable and the remote switch line.
Upper longeron angle bracket installed with cherry max rivits