Although I've never soaked my grain before grinding, I can see the benefits of doing so. Being a retired old time machinist/tool & die maker, I see the quality of design and workmanship that goes into the Country Living Grain Mill.
Even though I live off grid, I currently use an electric impact grinder to make my flour from wheat, beans, corn, and rice. I just make sure I do my grinding while the sun is shining and I only grind what I need at the time. When anything is ground, it starts losing it's nutritional value and starts oxidizing within hours.