Great! I'd love to have another source of input on this experiment.
I forget which still(s) you have. Mine is just an airstill and I am getting a lot of grain taste in the distillate after two distillations. My first batch unpleasantly so. My friend suggested serving it warm at breakfast with milk and sugar.
I've started reducing the amount of grain, grinding it finer, and adding warmth to see if that reduces this by reducing the fermentation time. So far, it seems to be working but it needs to age more for me to know. I suspect that all grain in an AirStill might not be the best combination. It could also be that I am using un-malted grains and the different flavour comes from that. I have a half malted grains batch fermenting now and will try an all malt soon.
Chuck