Hey Danno -

I have seen (heard) exactly what you're talking about... so loud sometimes it is unnerving. Try the sailkote AFTER you wash it well with warm soapy fresh water. Seems like sometimes it was related to having sailed through some water with certain pollutants that robbed the teflon of some of it's properties. I've also seen guys with that mast ball use the teflon chip, espesh if your mast ball is showing wear.

Other option is to just replace it - worth the quiet, eh? <img src="http://www.catsailor.com/forums/images/graemlins/tongue.gif" alt="" />