I have been away from the game for a while and now I'm getting back into it. I bought a Monster Mill MM3 a while back and it has been sitting on a shelf brand new for over a year. I'm going to use it next week but I have a couple of questions. First I need to set the gap. Should I go .040 or .045? I also need to clean the rollers before using but I don't have any grain to spare. I should have bought an extra pound but it was too late. Can I use something else to clean the rollers? Also any other tips would be appreciated.