I use Beersmith which has decent profiles for equipment and mash. Are you sparging? For similar grain weight and boil time, I’ve got 5.5 gal mash in, 6.75 gal pre boil, for 5.25 gallon output. I sparge enough water to get 6.75 pre-boil (usually ~2.6 gal). My mash grist ratio is always 1.7 with...