You could contact BonnieLorraine. She said she will be selling springs at the San Diego super show. This is the relevant classified.
I have a culture in Irvine. They are just basic white ones. If you brought over a container with charcoal i could pour a bunch out for you. I don't feed out from it too often so it usually has lots of adults.
Not sure if your still looking for springs. Both my gf and my family live in OC so we drive up from San Diego at least once a month. I'd be happy to pour some out of my cultures for you. Shot me an email - scalibound at yahoo dot com. And we'll set a date.