Good write up. Thanks. I tired this with my new 8130 becuse down on the trackball was getting kinda messy after about a month and a half. Not worth the time and effort in my book. I wouldnt have to expect to pay no more than $15 for the outter ring and ball assembly. Seeing that my outter ring has some dings, it would be nice to replace both.
Where can I buy the outter ring and trackball assembly?