I remove all weights in the G9x, can't remember what DPI i use, but it's not the highest.
Elbowglue, that link just told us what the "Super Secret Formula" is for trackball coating...
Armor All!In the
Auction that Elbowglue linked:
"FREE Tip What did Microsoft and Flextronics used to lubricate these balls? ARMOR ALL! Hard to believe I know but true. So if you clean your ball and it doesn't roll as easily or ball is worn try the Armor All (spray into a dry cloth and apply to ball). And bit of greasy finger after eating popcorn or pizza will do the trick too."
In the
Q&A for the auction, there is a ton of info, it sounds like that guy really worked for Microsoft.
Some of this info could go into a Trackball wiki.