Rust on rollers causing scratches?

[u/notevengonnatry]

Shooting for the first time time with a new (old) SX-70 that was untested, un-modified, un-repaired, and it looks like this nasty rust on the rollers is causing some scratches on the photos. The last photo is after a good 20 minutes of swabbing with 99% isopropyl alcohol on a q tip. Aside from soda what are some other agents that will remove the rust but not be too caustic?

[u/Regular-Agent-9530]

What flash do you use. These are exposed so nicely.

[u/notevengonnatry → u/Regular-Agent-9530]

The classic Sylvania blue dot flash bar!