Thanks for all your help. The answer was: pull the screws tighter.
I found that out when I took the entire machine apart and moved it
in pieces into my basement. When I put it back together I made up
my mind that it needs to be pretty tight if I want to ensure good
contact for all those many pins.

-Gunther


-- 
Gunther Schadow, M.D., Ph.D.                    gschadow@regenstrief.org
Medical Information Scientist      Regenstrief Institute for Health Care
Adjunct Assistant Professor        Indiana University School of Medicine
tel:1(317)630-7960                         http://aurora.regenstrief.org