How to clean and polish MC275?

I have had the tube cage on my McIntosh MC275 MKIV for a few months now. I removed it today and found a thin layer of dust had settled under there. A wipe with a soft cloth has removed most of it but there is still a somewhat sticky remainder that requires some forceful rubbing to remove. Is there a safe product or way to clean this to regain its mirror finish? Any suggestions or tips would be greatly appreciated! Thanks!