Hi Kajetan,


Welcome to this forum.

Unfortunately, this forum will become an archive of the posts issued in the past if I correctly understand.
In my opinion you can model as rods at 60 degree apart from vertical. I do not think that more complex model is required. Of course the rubber is for the vibration. If you need more complex model I guess yu can send the query to the official service center.

(I know how it is when nobody answer, so I try to make you feel better )