I recently picked up a TZ that needs a lot of care. I got a tumbler/vibrating polisher to take care of my of the rusty, dull metal parts. There's a few parts with significant corrosion that I thought about using some spray on CLR (calcium-lime-rust cleaner) and polish off my hand. Posted a picture of a ramp switch that's pretty bad below. I wanted to make sure it wasn't too strong and that it won't damage parts. Any thoughts?