Not sure, I was rewiring the power cord and went to test it after I was done. All of sudden it's grinding. Maybe it got twisted when I was moving the foot controller around while rewiring. I'll check that out. Thank you.
I got to mess with it today a little bit. I made sure the line wasn't twisted etc. Seems slightly better. I removed the top cover and saw how it works. Nothing looks bad. Teeth on the gears are fine. I put a little grease on the teeth. It sounds like it's coming from inside the upper part of the shaft. Don't know what's in there, but could be a bearing I guess. Sounds crunchy like a dry bearing does.