PROBLEM SOLVED!
the source of the problem was several needles had come loose when i dropped the old U-Joint Cap.
I bought a new U-Joint at a local auto parts store (with lifetime warranty) for $13.99 + tax.
after i installed it, no more vibrations were present at 40-65 mph.
BIG TIME KUDOS to everyone who chimed in.
I truly appreciate your help.
mechttu
Houston, TX
Last edited by mechttu; 11/04/2009 10:30 AM.