Topic: Sticky Trackball Thankyou, Patrick. I appreciate the pointers. My particular marble trackball doesn't use IR. It, too, has the "tires" on the x and y axis. You have a good point about using alcohol on rubber. Good old soap and h2O sounds good to me. I'll give it a go. Thanx too for the tip on adjusting the "feel". Joan Rapier [log in to unmask] Also on some loosening the ring that holds the ball in a bit will do wonders for the feel. PCBUILD maintains many useful files for download on our web site - visit our download page at: http://nospin.com/pc/files.html