How do folks deal with rusty hardware? I'm restoring a mid-70s Motobecane Grand Record. I have little bits, like the chainring bolts on the TA crankset, that can't be easily replaced but have a fair amount of surface rust. Simple Green won't touch it and EvapoRust turns the shiny chrome a dull gray color, albeit not rusty. Is there some other solution I'm missing? (No pun intended.)