New From Yuma AZ

Welcome from the Sierra Vista area. Nice score, just enough work needed to make it an interesting project, I like your plan.

The rust you have is pretty normal for out here. The areas you mentioned are where dust collects and then during monsoon season hits it gets moist and it's like holding a wet sponge next to the metal. The higher up the rust is usually indicates how deep the dust accumulated over the years.

Good luck with the project.