My 12 year old 730-0164 is in pretty bad shape. The outside of the grill is flawless and I just replaced all burners, flame tamers, and cooking grids with warranty parts. However, the inside of the grill is falling apart. In fact, the bottom of the grill or fire "box" (I don't know the proper name) has a hole about the size of a softball in it. Is it possible to replace that part? There are other parts that are falling apart (top rack holder, igniter guards, etc.) but I can do without those if I can fix the main part of the grill. If not, then I guess I'm in the market for a new grill.
Here's what the inside looks like: https://goo.gl/photos/fdJ6orVkWCS96WGp6