The speedometer on my '73 75/5 is moving wildly about. Speedo instrument was rebuilt about 3k miles ago. I replaced cable but still no help. If I hook up a variable speed drill too the drive end of the cable, speedo needle is smooth up to 60mph at least. So, maybe it is the drive gear in the transmission. The Cylmer manual says on the 4 speed, it is removed by just lifting it out. Is that possible, as I can not just lift it out. Any thoughts appreciated.