Fixing chips in plastic bezel

I am in the process if fixing my pushbutton shifter (thanks to Cosgig and Vdart) and found several chips in the shifter bezel around the wiper and headlight switch areas on the raised circular areas. What would you use to fix these chips? Bondo? Epoxy? Obviously it has to be something that will sand smooth to match the contour. Suggestions please. It will be painted over so what ever material used will be hidden. This is for a 63 Dart.

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