Anyone know how to tell a "Hot" Attitude from a regular. Is there a different part number? My box says 4.73 "hot" but I question whether the Attitude on level 2 gives me the same lovin as my 4.61 "hot" did on level 2. Just a seat of the pants feel but it feels like the Attitude needs to run level 3 to keep up with the 4.61 level 2.