You nailed it.
Jim
Ron Rosenfeld
shared these priceless pearls of wisdom:
-Loose connection.
-Bad probe
-Bad channel in the GEM.
Jim Weir (A&P/IA, CFI, & other good alphabet soup)
VP Eng RST Pres. Cyberchapter EAA Tech. Counselor
http://www.rst-engr.com