The primary gear train on my 1941 South Bend lathe makes a lot of noise. I was hoping that replacing the spindle gear would have helped, but the results were disappointing. It may even be worse than before. I decided my next step would be to replace the sliding gear and its shaft. It is obvious the shaft is bad (I had no idea just how bad!) and the teeth on a couple of the gears have worn to a point. In this video, I take apart the gear bracket and replace some parts. Did it make a difference?