I have a 1950 3100 . It has the original speedometer with a new needle in it. The Odometer works OK, but the needle for the Speedo is stuck on 0. I have taken the unit out and removed the glass and chrome trim piece. When you spin the piece the speedo cable goes into the needle moves, but when you push in on that and spin it, the needle does not move?? It does push the needle and shaft out a little when you push on that speedo cable receiver. Any ideas on what I can do to fix this??