nx hatch noise at road bumps

[Frank Ewald]

I am getting a significant amount of noise when I hit medium/large road
irregularities. After trying to track down the noise it appears to be
coming from the hatch on my NX. There are small rubber bumpers  on the
hatch that I will be replacing, but I'm wondering if anyone else has
experieced this and what was done to solve it? Are there larger rubber
bumpers from another model which would tighten up the hatch?

This noise started shortly after the installation of of GC's and AGX's.

Regards,
Frank