My JD 2720 lift arms are rubbing my back tires... I called the dealer where I bought my tractor and said only the 2720s with the R3s had that problem....they told me that If I wanted it fixed it would cost $600.00 I only have 28 hrs on the tractor and its only 6 months old......I was pretty sour with the response....I talked to the owner the following day and he said he would pick up the tractor Tuesday....I explained how upset I was with the situation...I shouldn't have to pay extra to make the tractor work correctly where its only 6 months old....I will let you all know how it works out....hopfuly they take care of me...