While looking over a Myriad at a local hardware store I noticed that the fire bricks had no retaining bar/rod along the top. When I asked the young lady working there about this, I got the "deer in the headlite" look and a "I'm not sure". Came home and went to the Drolet website but I still found no evidence that these bricks are held in place some how. Could someone with a Myriad (or similar) please give me a yes or no on this. Thanks in advance.