Correct - feet. Nothing touches the sides.
Forum members routinely JB weld their fire boxes, fire rings and plate setters. Haven't heard of any negative effects, other than sometimes it breaks apart again.
The original firebox had a bottom - the new egg fireboxes don't. Probably no big deal since the bulk of the fire sits on the fire grate.
Correct the Casa Q fireb…
Depending on where you are, there are lots of dealers around. I'd visit one and check the sizes in the showroom. Dealers are happy to sell you "out of warranty" parts, beaucoup de profit....If the parts you have a re cerami…