I have a ZK with a 61 inch deck. I hit a small stump and bent a blade.....and the deck. I put a couple of washers on one side of the spindle to level it back out. I was under the impression that the nice, deeper deck on the ZK was probably stronger to compensate for the extra weight, power and size. I've been using standers since 1997. I've never bent a deck before. The X has a new design. does it fold up as easily as my ZK?...I'm not happy.