This week I'm buying a 2010 JD Z920A 54" cut, with a Kaw 26 hp mower to replace my 2000 Great Dane Surfer. The 920 has 142 hrs on it and looks and drives like new. I got to thinking though this morning, "how the heck am I going to get the blades off that tank to sharpen them?" With the Dane it's easy: get the Jungle Jim lift out and pop her up. So how do you guys that are running the JD Z900 series remove the blades for sharpening? Also, are there any tips or suggestions I should know about this mower? I'll be cutting 1.6 acres of lawn and occasionally another 1.6 acres of field grass although I've got a tractor and bush hog for that.