I don't think so, I think it is just excessive
lubricant from Renishaw. I have 3 PH-9's and they do the same thing. We are in the process in changing to a PH-10. We have a B/S valitdator with Lk Dmis. What operating system do you have on your B/S.

Bill Rogers
Quality Engineer
Lockheed Martin Corp.
Phone: 407-356-0621
Pager: 407-981-7613
E-mail: william.e.rogers@lmco.com