Dual mass flywheel balancing

[spongebob]

I did my clutch/flywheel three years ago and thought that it should cure the imbalance or resonace. But I never balanced the clutch together with the DMF.
Maybe that could make it better.
When I took the old DMF apart there where a lot of long springs and also grease that I guess can move around and cause vibrations. No elastomer which I thought there should be.
Another idea is to go lightweight but there seems to be many negative effects if I chose that way