This is my 1st step mash so I would like to pick some brains about the mash calculator. I am mashing 12.4 lbs of grain and want to end up with a pre boil volume around 8 Gallons. I would like to do a protein rest at 122, sacc at 154 and mash out at 180. Quick water says i need 41 total quarts of water. How do i set this up in the mash calculator? When I punched things in I ended up with too much water. :?