On November 19, 2016 at 13:09, andrewinboulder said...
I use a bolt with a head that's just big enough to slide into the key hole slot, and then fasten a nut to secure the bracket.
I do the same and use leftover Snap rack shelve clamp down brackets drilled and cut to fit.
It only takes about 10 minutes and it doesn't sag or flex.
