I would have given 5 stars if the rpm wasn't so high. I replaced the motor on mine with one bought here on Amazon. You can select from several rpm ranges. The one I chose was the 40rpm one which slows the table down to 1.3 to 6.75 rpm. The last half of the adjustment knob there is little change though. It is a bit tricky since you need to remove the motor gear before you can get the motor out, and you are working down in a hole. I chipped off the dab of glue then used a Smith Little torch to heat the gear to smoking. I made a small gear puller as shown from a bent piece of aluminum to pull it off while hot. I will go back on the new motor cold with ease and you will need to put a dab of epoxy or otherwise to hold it. I also sanded the bottom rim where contact with the graphite/copper bar is as well as between the chuck and table. Degrease with brake cleaner at these locations for better electrical contact. Works well for small stuff which is what I bought it for. Mine is the one from Vevor.
Mike 
