There were a few grains that definitely slipped through the roller gap when I was pouring the grain in. I only did a large handful of grain. I bought a feeler gauge, should be here soon so I can verify what the spacing truly is. I will check the milled grain when I get home to see if there really are intact grains, or if its just a trick on the eye. To me, it doesn't look like too many are truly intact.
I think my biggest concern is that the setting was still relatively large in gap size, and the grain really looks powdered. It feels pretty powdery as well. the difference between 0.4 and 0.375 is concerning as well, just because it looks like I kinda went 0-100mph. This was all milled by hand crank, so it's not like I could have gone anywhere near as fast as the drill did. I reached out to NB, they are super supportive, even giving me a whole new shipment of grain for free. They also thought the mill may not be spaced properly, or that I was going too fast. I sent them these photos, hopefully they can also help get to the bottom of it. I just don't want to give up on milling grain, but my paranoia is deep