To get mine unfrozen, I oiled like Joe said and let it set. Then I went back and tried to move things. This one still did not move. The stitch selector and the stitch length and the reverse stuck the hardest and were the worst job to fix. I also had problem when the knob broke loose - it only had a set screw holding it and since the shaft was gooey the knob turned but not the shaft. We had to use a Dremmel to get it secure. Triflow and time. Drop on the Triflow thoroughly like Joe said and wait. Then check it in a week or two. The reverse has internal stuff that needs to ungoo. Don't try to force the knobs to turn. Use the Triflow oil and WAIT. Sit on your hands. BUT if you do that you will need to be very thorough. It is the dried gummy oil you can't see that is giving you the grief.