One of the things that bugged me last year was setting up my YM1810 to pull my 4ft bush hog (wallace brand). It work ok, but I never seem to be able to raise the mower off the ground. I see other tractor with entire bush hogs off the ground. Raising mine as far as I can without hit the tires just lifts the front of the mower off the ground. Rear wheel is still on the ground. Should I be able to setup the 3pt to get more height? Do I need longer arms?