Bill Judson wrote: > > Sounds good. My only problem is that I don't see any obvious way to rotate > the ring off...there are no groves or treads that I can exert pressure on > to rotate, as a desktop mouse usually has, or any obvious way to get my > fingernails or a screwdriver under the ring, without my seeming to > risk breaking it...or is this in some documentation I don't know about? It > doesn't seem to be in the service manual, that I can tell, or the user > manuals.... > > TIA, Hello Bill: My experience with the trackballs on my 230s showed that sometimes you have to pull the top cover of the PB off to be able to get enough grip on the ring to twist it. Someone posted an excellent take apart for Duos about 1-2 weeks ago, but if you need, I can send detailed instructions if you email me privately. I'm just too tired right now. Sincerely yours, Grizzlygiant