Hydraulic damper licks!?!?!

Hello.

Two weeks ago, I registered my 8s after months of screwing. But the joy was short - lived.
Among the many repairs were also the rear level dampers including spring plate, bearing ring, high pressure hoses...
Unfortunately I had to find out that the rear right damper licks on top of the plates and the hexagonal nut!!! In the meantime I have removed the spring leg again, screwed apart and again.... It licks zawer significantly less, but still a few drops over the night.

Now my question: How firmly is the hexagon nut pulled?

Thank you!