Is the instrument cluster loose on your VW Kombi? You're probably missing these retaining clips. I find whenever I remove the instrument cluster I always lose at least on of these retaining clips. They fall behind the dash into the world of pens and socks.
These retaining clips will solve the problem with the loose cluster. They are sold as a pack of four and fit late baywindow Kombis from 1971-1979.
These are from a quality german supplier so they are manufacturerd to original specification