I used Tractor Supply All Grain feed and that sweet feed recipe that's all over the internet. It fermented for 6 days. By day 7, the top of the wash was pretty clear, so that meant it was time to run. I got 5 pints (three 750 ml bottles) of good tasting stuff that averaged out to 90 proof from 5 gallons of wash. It doesn't have any weird smells or tastes. It was very sip-able straight out of the jar. I'm aging it with charred oak sticks, I but had to tap into one bottle early. Makes a fine Mint Julep.
Now, tell me if I've got the science of heads/hearts/tails correct: if it smells and tastes good, keep it. If it smells like paint thinner and tastes like butt, rerun it in the next batch.