It had a vibration that came in at about 3500 RPM. It had the round flex plate with the bite section, and the converter had 3 weights on it.
I was thinking this being a steel crank motor with these parts was the cause of my vibration.
There's your problem, if the convertor has weights on it it shouldn't have the flex plate with the "Bite" out of it, it should have one or the other, not both. If it's a forged crank there should be no large weights on the convertor and a completely round flex plate.
