On the M90, if you do polish it, it will corrode. It's only a matter of time.

As mentioned, the coating on the M62 is designed as a thermal transfer medium. Don't remove it, and don't re-paint it.

If you want to polish so badly..

Polish the inside! :twisted:

I'd rather do that!! All go AND show. I'd have to read up on how to do it. I'd like to take the SC off to do the coupler sometime anyway.