I now own a Kubota BX1860 and my back has really gotten bad. I want to keep mowing my grass and am thinking of trading the tractor in for a zero turn at my Kubota or Grasshopper dealer in my area. I do have one slope in my yard about 60' by 100'. It probably gets close to 20 degrees at the last 8 feet to the top and levels out on a paved road. Also I weight over 400 but am losing now and down 45 lbs in the last 2 months. Any advice would be appreciated.