Ongoing vibration issue

I just copied this

"Agreed, there will be a weight, I just ran into this problem. My 340 that I just removed was internally balanced, but I needed a torque convertor for a stroker that was external balanced.

Summits sells kits with a weight and template. I would need to weld the weight on the neutral balance convertor."

from the following link: How To If Internally Balanced Torque Converter

don't know if it will help.