I’m a die hard Kensington trackball user.
The tech support has always been super nice with. My first trackball was an Expert (not pro, not optical, no wrist pad or anything) with a detachable cable. After many many years of faithful use the cable connections on the board went bad. The trackball was way out of its 5 years warranty support. I called Kensington, told them how big of a fan I was and how much advertizing I’m doing for their trackballs. Blab bla bla bla.
The guy said, ok ok ok. Here’s your RMA number. Send us your ball and we will return it with a new base.
Couple weeks later I got a new Expert in the mail. I was really impressed.
Did you get an Optical Expert (black base, black buttons, with a scroll wheel around the ball) or the old Expert? (grey, 4 buttons no scrolling device)
The Expert Pro had a longer base working as a wrist support.