Thanks for the suggestion Bob. I did some fiddling and did as you suggested, but used a tiny film of 3 in 1 oil. I also sanded the sliding focusing rail that the focusing wheel bears against. There was some crusty gunge that built up due to inactivity. Also let out the set screw that keeps pressure on the focusing drive wheel. All the above has helped, but I think the best prescription will be to use it. The enlarger appears to either never been used, or used very lightly, then stored for a long time. So there are some creaky knees to address, nothing that seems too serious.