I thought a picture might be helpful to understand what we did a little better. Here is the central ring assembly:
I took this one from the beryllium7 website at BYU. On the far right side of the assembly is a silvery metallic colored piece, which is the aluminum support we think was giving us the problem. Another is on the left side side, and I've pointed out both.
Dr. Peterson said that he hopes we never have to take the assembly out again...it is a pain in the neck to remove it, clean it, and make changes to it. We were lucky to start working on it at around 2:00 and make it out of there by 6:00.