aomagman78, I used a similar method. I shredded 8lbs in a food processor, held at 152F for 1 hr with 2 gal, drained the 2 gal, then added one more, boiled for 30 min and then "mashed the potatoes" added everything back in and held at 152F another 1hr this time with some alpha and beta amalyse. my OG for the gallon I had left after boil (after the massive fallout) was 1.030. when I use numbers like yours, assume 25% starch, that puts me around 37%. also, there was WAY too much potatoes left. i'm not sure where I went wrong. let me know how yours works.