I've been repairing the instrument binacle over the past few weeks, fibreglass, araldite, etc, as the speedo had actually broken away completely. When I was reassembling it all, I noticed that the clip on cable, when in place, had a bit of forward/backward movement, only about a millimetre or so. So when the van was in motion, I reached the cable and pushed it all the way on. Bingo!! Smooth speedo movement. I pulled it back a bit, and there was the bouncey speedo I learned to live with! The little clip that you press to release the cable, I forced a piece of cardboard under it, and now the cable cant move at all, no speedo bounce!!
Just thought I'd share.
![OK! :ok](./images/smilies/ok.gif)