Vinny-Thanks! I'm sure small bolts would work. I used a cheapo hand riveter that cost @ $15. I had one cook on a windy day where I had a tough time keeping my temps down. I'm thinking I need some sort of gasket or hi-temp silicone around the edge to seal things up a little better.
Heisenberger-Thanks! My lower rack is 8" down from the rim which is 24" from the bottom of my basket. I'm only 3 cooks in, but haven't noticed any issues with edges overcooking.