What's Best Product for Removing Pitting from Window Plastic Moulding

[Piranha]

I've tried a few things like Polish, fine rubbing compound, Bumper Care and so on, but they are not removing the oxidisation and pitting.

 

Next idea is to use fine wet n dry or possibly paint them.

 

Just wondering if there's a better solution?

 

[leonk]

Mine were like this. In the end I removed them, sanded the affected areas back to alloy, primed them, flatted down and then sprayed them with satin black. Looked like new again.

[Piranha]

Mine were like this. In the end I removed them, sanded the affected areas back to alloy, primed them, flatted down and then sprayed them with satin black. Looked like new again.

 

Thanks I had a feeling that would be the way to go.