I have this mill, and it is a pretty good deal. It tends to give me a bit of trouble from time to time. Occasionally the wheels will just spin and not pull any grain in. This usually happens when changing grain types being crushed (going from 2row to crystal, etc). Sometimes though, I'll grind a hopper of 2 row, and try another hopper of 2row and it won't grab for some reason. When this happens, I'll either run it backwards and forwards a few times and it will grab or I'll have to adjust the rollers mid-crush. The main thing is tightening up the nut on the adjustment screw once the correct gap is set. This should eliminate it from wandering on you.