I agree, the rubber sleeves on trackballs do rot, glaze over, disintegrate
with time. A little Rubber Rejuvenator available in years past from
typewriter or office supply stores is great to put on the rubber. It was
designed to soften typewriter pallets. I use it on pinch roller in tape
players, track ball and mouse rollers, etc.
Doug K7ABX

"Steve" wrote in message
...
Understood.

Just an opportunity to mention that WD40 can't solve all the worlds
problems.

Steve
s/v Good Intentions