I've had my Niche for awhile now and for the last year or so it feels like the grind setting wheel skips in certain areas as it is being turned. It is hard to explain but you can literally feel the skipping in your hand as you turn the dial. The turn feels smooth and normal and then I get this strange feeling as if the wheel is jumping to a new setting rather than smoothly gliding across as it is turned. I've cleaned the machine and changed the internal springs as directed by Niche customer service, but still no resolution. Has anyone else experienced this issue?