Just got a used wico Trackball. I've read a lot about cleaning them up and replacing rollers and bearings but had three questions I haven't seen addressed:
Is there supposed to be a gap between the ball and the top housing? It seems like it would be an easy way to get pinched. Do I need to replace the springs that hold up the rollers?
Is there a specific method for removing the bearings from the rollers? I can't get mine to budge. Is there something I'm missing or are they just "gunked" on.
What's the difference between Wico and Imperial trackballs? Are parts interchangeable?