I recently added the Peterson Eng. EZ focus upgrade to my LX200 GPS 12 inch to try to make the focus easier to turn. The focus is still hard to turn and I hear a thumping noise as I turn it. Before doing the upgrade, I had tried to run the focus all the way in and out to try to redistribute the grease too but that did not seem to help. I performed the mirror lock repair (from Peterson Eng. website) but that did not change anything. I think the baffle grease has become old and waxey and may be contributing to the friction, but that should not account for the bumping noise when turning the focuser.