Drilled out the four rivets holding the rear support angle to the subpanel. Reinstalled the angle on the correct side of the subpanel and secured to the Avidyne nav tray. Reassembled the subpanel on the bench and began routing the cables of the various components to the ACM. Temporarily installed the Avidyne navigator to the panel. It installs from the front using an Allen screw to move it forward into the connectors in the rear.