Handlebar/Steering damper

Hey, Today I had a checkup of my bike at the TÜV and they found a small play on the handlebar. After investigation by myself I found out that it is coming from the handelbar/steering damper in the handle crown comb. (B34234300000) I checked some spare parts websites but could not find the damper.

My questions: 1. Can this damper go bad (28k km, 2016) or is this play normal? 2. Is the damper available separately or do I have to buy a whole new handle crown comb? 3. Can I improve the situation if I add/ leave out washers?

Thanks!