Hi Darin,
I just looked and found my reply to you (from 5/30) in my email outbox, so I don't know why it didn't go through.

In any case, I now think you should save yourself the trouble of sending me the pulleys you offered, because I've since come up with another solution. I just found a good deal on an entire replacement derailleur of the same type. The old one was a little bit bent, and somewhat worn from the chain jumping the old pulley. Not to mention the fact that I haven't yet figured out how to change out that upper pulley anyway! Perhaps once I get the replacement mounted I'll offer up the old one gratis to anyone who has the skills and wants to put it to rights.

Thanks again for your generous offer, but no need to follow through on it now.

Dan