Thanks. Though, one last question, is it normal to do progressively better and then suddenly have a few bad tests? My practice tests went from 151, 157, 159, 161, 165, 165, 166, 167, 167, 168, 171 to 159 (this past Saturday) and 157 (today.) Like, literally on the nose went backwards. I'm fairly certain it's a mental block but I is it common to have a little pre-fog? How did folks get out of it?