Anyone here have/using a SlikStik controller? I've had mine about 4-5 years no and slowly the trackball has been dying. First it didn't spin left very well (made a funny noise), then last week it decided it would no longer go horizontal, only vertical. Yesterday it decided to not work at all - no mouse movement when I spin it. I've tried the controller on a couple diff computers with the same results. Everything else works, spinner, joysticks, buttons...just the trackball has died. Any ideas on what I might do to get it working again?