i geting ready to do something about the rust that has formed on the exterior of the tank where it contacts the support bracket. its not rusted thru or leaking yet. im sure ill findsome deep pitting when i get it off and clean it up. my question is....how to fill the pitting, and protect against further rust. weld? braze? jb weld? i know many of you have had exactly the same issue....what process works best?