Hi All. I have a Roksan Xerxes inner and outer platter which, though in good general condition, has developed quite a few smudges, light marks and abrasions over the years. Anyone have any advice about how to polish it (esp. the outer plater) up nicely? Platter is mirrored finish aluminium alloy. I have tried the obvious household cleaners, eg Mr Sheen, which gets rid of finger prints and dust but not more stubborn marks. Read up on other polishes but am a little hesitant to go down the Halfords road without prior feedback. Cheers.