I have just reassembled the engine on my 1989 300SE after blowing the head gasket. All if fine and the engine is back to running smoothly. However, I noticed that the odometer is not working now. It had been working fine prior to the engine rebuild. Speedometer is working fine. I did some investigation on the forum and everything points to a gear issue. Before attaching that job of removing the cluster just to find out that it isn't a gear issue, what can I look at in terms of within the engine compartment where I had many things apart? I'm thinking it's a cable issue, but not sure. I just think that it is unlikely a gear in the cluster because it had been working fine.