I think I found my vibration problem

no, I still have a harmonic imbalance problem but I don't have the vibration. I have said all along that the vibration I have felt seems like a driveline problem.
Harmonic imbalances are vibrations. I think the problem
here is you are multi-posting this project,and losing track
of what you've shared where, when, & with who.
Many older mopars have been found to be oz. out of
balance,not grams,and mixing non-OE pistons in could
very well have made it worse.You can get your rotating
assy. balanced as is w/o trying to internally balance it, as
long as you don't plan on rod/piston changes etc., you're
set for the duration.