Going to try Soppressata

[Jim]

If you have a LEM Big-bite grinder, there is a plastic retaining ring that goes on the back of the grinder screw that is included in the assembly, but isn’t very obvious. This retainer ring prevents the screw from moving back and forth as you grind. Check to make sure you have the retaining ring installed because it will cause exactly what you are describing. Just thought I would throw in my 2c worth.