I just picked up the Motion Pro Belt Tension Guage and noticed that it doesn't fit between the belt guards (looks like it is designed for 1.5 to 2 inch belt). Before I shave it down, does everyone else have this problem? Am I using it correctly (hold it by the rubber end and push the metal end against the belt)? I have never used one of these things before, but I heard correct belt tension is very important on the warrior. Thanks!