Thanks to all for the many fine, instructive responses I received regarding my camber problems. One thing very comforting about the krnet is the fact that if you have some kind of problem, it most probably isn't the first time it's cropped up. I going to try and trick this thing up with the Jim Faughn shim idea, and in lieu of a successful outcome, I probably build (or have built) another lower gear bracket. More as this story develops...
Thanks again, Mike Meyer