Tighter my friend. Should be no whole grains and you have tons of whole grains.
Mind you with a corona mill the first bit you grind will have whole grains until the auger gets the grain pushed up into the plates and the last bit will have a few whole grains for the same reason. I start crushing the grain and after I have a cup or so ground put a piece of typing paper under it to catch the middle of the grind and judge form that bit.