The "nominal" grind setting on the grinder doesnt really mean very much unfortunately when trying to compare results with other users. A much more meaningful number, is the number of steps from actual Zero. If you are unsure of what this is, it can be established by following these steps:
With power OFF, and the Step-Lock depressed, gradually wind down the Hopper/Upper Burr Carrier until you come up against the Lower Burr plate. This is Actual Zero on your particular Rocky. Wind back to the initial setting and take note of the number of steps between this and Zero.
If you cant wind down to Zero, there may be a travel limiting screw inserted in the Upper Burr Carrier designed to protect the grinder from being set so low as to allow the Burrs to make contact. For the exercise of establishing where Zero is, you can temporarily remove this screw and replace it again after youre finished. Anyway, once you know what your true grind setting is, it will make it a bit easier to gauge what might be going on. All the best,