My first step in getting this fixed, was to remove the elbow, and see how the rest of it was. If nothing else, I needed it to use as a guideline for the new section. After getting the old piece out, it was clear that I would be working pretty much blind. It was almost completely destroyed.
Everything is welded in place and sturdier than ever. I'm going to apply a layer of zinc coating over everything and then seam seal all of the welds as an extra added precaution. After that I will clean up the section of the bottom plate that I removed and weld it back in place.
In total, I spent fourteen dollars to repair my heater channel. Not too bad.
See ya soon!!