Cleaning headlight covers

[Ed Lutz <montjuic@domain.elided>]

The plastic Carello headlight covers on my Spider are looking a bit less 
than clear. They are somewhat fogged and yellow. Is there any way to clean 
these and return them to their proper clarity? I'm thinking of a plastic 
polish perhaps or..? New ones are pretty costly and these are in great 
shape otherwise.

Thanks,

Ed

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