Anyone have difficulty attaching the side fire box. There are the 6 holes on the grill that match up with the fire box, and you have to knock out the plugs in those 6 holes with a screwdriver and hammer per the instructions. Two came out without any problem, three I had to bang on and eventually dent the grill to get them out, the 6th hole plug just will NOT come out. To be honest, I am pretty pissed about that, it appears that this plug was stuck in their too tight. This plug is the one on the top. The grill is all dented now from all the banging and I am not sure if this will affect the way the side firebox attaches to the grill. I want it to be flush on those 6 hole connections, but afraid it will not be now due to the mangled holes. Any thoughts? I am considering taking it back to Lowe's and demanding another one.