Get yourself some of this and apply to the rust. It will loosen it right up. If you don't believe me go get some put a chromed rusty part in it and see what happens after an hour. Wont touch the chrome. Ive used it on a lot of my chrome rusty parts for this bike. zoom in on the shocks. they were covered in rust.
https://www.instacart.com/landing?p...MIgf2hv7-p8wIV8nxvBB3lkwF4EAQYASABEgKvC_D_BwE
https://www.instacart.com/landing?p...MIgf2hv7-p8wIV8nxvBB3lkwF4EAQYASABEgKvC_D_BwE