Just wondering what others are experiencing with failures on their mower deck belts. I have a JD Ztrak 830 with 54" deck and am on my 3rd belt. I have had to replace the belt every 70 hours. JD did come out with a new design and that was the last one I put on, so early next year I will find out pretty quick if it will be holding up any better since I now have right at 210 hours on the mower. It just seems to me that 70 hrs per belt is a little low. Thanks for any input you might have!