Since they're acrylic, you can just drill a hole straight through both panels, and use a stainless steel pin inserted through to hold them in place. Alternately, you can install a friction lock in the tracks. I'll see if I can manage to take a photo of what I'm talking about, though it may take some time. I seem to be spending more time on the road than at the shop, lately.
Meddle not in the affairs of dragons, for you are crunchy, and taste good with ketchup.