BianchiGirl:
You're right, it would be easier to upgrade. I'm into vintage bikes and enjoy searching for period correct parts in order to keep them "vintage". But if I can't find them, I'll upgrade to keep the bike running.

HillRider:
I love reading your story about the "almost always" non-symmetrical bottom bracket situation. The links you posted were interesting too. I didn't realize that generic cup sets were available. And they look like a pretty good match to my original parts. Thanks for the offer on your SR cups. I might take you up on it but want to look a little more for Shimano setup.

Jeff:
Yes, I am in the Portland Metro area and have visited the bikes stores you mentioned several times. My experience has been the used parts they have are usually fairly worn. Sometimes however, you can find something in good or better condition. That's part of the treasure hunting fun. I'll have to check them out for bottom brackets. And I would be interested in your spare Shimano cups if they are in good condition. From what I can tell, my spindle measures 37.5mm on the left side, 52 in the middle, and 32 on the right.

Thanks everyone! : )