Wow, thanks for all the quick responses.
What's hanging me up is that, for the life o' me, I can't remember how the GG goes in. I did indeed do a partial disassemble, but I thought maybe I'd have to recalibrate the dual focus after repairing. I'll post a pic of the top assembly soon, and hopefully someone can talk me through how to measure. There are a couple of sources I've found via *bay who could cut the glass, not too expensive.
Brad, I'll look up the Oakland repair place you mentioned & see if they can help. Thanks for offering yourself, but since I don't have a car, it'd be hard to make it out to Gold Country. Then again, if you find yourself in SF, shoot me a message.
As for posting pics, I've just gotten back to using APUG, but will flesh out my profile soon.