Having come back to playing after a while I dug out my BTB 405 QM to find that there is some corrosion on the bridges and the knobs.

I know i should have kept it drier and cleaner but the damage is done.
Does anyone know if i can clean these up without damaging the satin finish, or will i need to get a bit more drastic and get new hardware or get the existing hardware chromed?
Cheers