Any RX owners on here with R4s? I'm between buying a NX and RX but am unsure on the track width on the RX with R4 tires. Why width with tires other than R1s aren't listed is beyond me. From looking at the Kioti specs the RX6620 with ag tires has a narrower width than the 7320 is the same true for R4s? I really want to stay with 72" implements if possible since this tractor will spend a lot of time in the woods and rows of trees. I plan to run a tree spade on it so the greater 3pt and loader lift capacity of the RX is appealing to me. Anyone know the width of the RX with R4s?