I'll give grinding it flat a try. It just is difficult to swing a hammer in the small area.
I didn't replace just the bottom for a couple of reasons: the bottom was secured to the side brackets with similar rivets (not nuts and bolts); the worst of the rust-through is along the corner of the front bracket, so nothing to really work with there to attach a new bottom.
Thanks.
Last edited by lc_btv; 09/29/2025 2:18 AM. Reason: grammar