Use care when buying a JD belly mower

[BloomingtonMike]

I use my RT1260 Frontier Tiller with the 7-iron deck on as well. I also have crazy grades in my yard with no problems with the deck. So far I have only removed mine in the fall because of snow in winter. Sorry to here you have had problems. I also have the "smaller?" R4s on my 3320 with no issues. Have you went through the manuals and checked all the setup procedures for the deck? Just looking for ideas to help you get the problem solved.