Thank you Jeff - I thought the center hex thing might do something, but you are right - I did not know what, and I have no such tool.

I have tried loosening the caliper and pulling the left shoe all the way over. It never seems to slake off any of that extreme bias after squeezing the brake lever. I've had other calipers do this, but this particular caliper seems even more difficult. - I think my only other option may be to bend the spring a little, but this is a little touchy I'm sure.