I just finished building my mash tun and tested for leaks. I used a single braded line for lautering. The drain on my cooler sits about 1/2" above the floor of the cooler. What am I to do about the mash that sits on the bottom of the cooler after all has drained from the spigot? What effect will that have on the amount of water I use at mash in? Tilting the tun will disturb the grain bed and I don't want that, do I? Thanks.