I had a crack running through the back bolthole, and I opted to take a pc of steel, about .312" thick, and drilled/tapped for 8/32 countersunk screws into alum. housing to secure the plate. Drilled and tapped to thread in a stud, and left the existing threads intact. Loctited a stud into the "new" hole, and i figured the width of the plate would distribute the load somewhat away from the hole. Did this in 2008 and it's still 100%.
