Has anyone noticed when they open a bag of whole grain flour it is rancid more otten then not? The expiration date is no where near close and yet it is always slightly off. So I used a burr grinder for coffee to grind some grains and the result was amazing. Made a great soft white wheat and duram pasta. Did the same with oat groats and had the best oatmeal ever. Is anyone grinding their own flour and what are you using? Can anyone tell me about hand grain mills?