I am trying to adjust my deck so it is level. left to right it was at 3" right along with what I have the dial set at. the front was at 2 1/2" and the rear at 3 1/2". I know how to lower the rear, but the front I am having problems getting the left and right front to set just below 3". I have the jd gauge and have the online manual. is there a trick been fighting for over a hour.