Possible to mod a dampening into the cueing lever?

Some turntables - or tonearms, more precisely - have a dampener on their cueing lever so that the tonearm lowers nice and slowly without the user having to pay attention to it. This is of course not really necessary, but I wonder if it would be possible to mod a dampening into a cueing lever without dampening. Always a bit jealous when using the SL-1210s in the record stores :)

What parts would be required? I will post a log if I actually do this.

I am posting this as a thread instead of a tech support question because I feel that other users might be interested in doing such a mod as well. Tell me if you think that this is too specific.