ATI super damper?

Sounds to me like you have a couple pieces of the puzzle mixed up. Your flywheel is likely neutral balanced, your damper (I assume stock) is for an external balance crank so it’s weighted, and your rotating assembly is externally balanced but wrong because you changed pistons. Was this whole bottom end balanced as a unit when the engine was built? If not it needs to be. A new expensive balancer will not fix it.