I am wondering if anyone has a process for restoring the aluminum grille for the 57,58 and 59 300s. The main bars seem to have a chrome flash-like anodized bright on them. The minor egg crate bars appear to be bare aluminum. Of my 3 grilles to choose from I have been polishing the best to remove all traces of years of oxidation. I do not want to disassemble the grille but would like to hear from others who have tackled the problem.
Marv Raguse