During these years of production, the factory color was what VP called Aquamatic White.
Although they eventually went to a slightly darker grey color (C and later models), your DP-A will likely be the Aquamatic White.
An industrial paint supplier can color match this in a two-part epoxy type paint, or they may have a better suggestion.
A few suggestions:
NOT remove any more of the factory paint than need be.... (it doesn't get any better than what was applied at the factory).
DO NOT use a wire wheel on the drive..... (the wheel will leave traces of steel embedded into the aluminum).
DO NOT sand using a media that is too fine.
Any areas that have been sanded through the OEM paint should be:
..... wiped down with a bare aluminum etching solution.
..... lightly coated with Zinc Chromate primer (or equivalent).
Bring the aluminum up to above dew point temperature before applying the paint.
If you use a two-part epoxy, be sure to give it plenty of time to cure before handling!
A few "don'ts":
DO NOT apply paint during high humidity conditions.
DO NOT apply paint in cold conditions.
DO NOT use conductive bottom paints.
Good luck.
You will be happy with a fresh new appearance.
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