I have a Lazer Z 60 27hp Kohler. It does not cut very well. I had a Snapper, but had some mech problems so I bought an Exmark. However, the Snapper has a better cut. When I demoed Exmark they seemed to cut exceptionally well, but mine does not. Many times I have to double cut what the Snapper would cut in one pass. Does anyone have any suggestions for things I can check on the mower to see if there is a problem? Also, I sharpen the blades daily and keep the underside of the deck clean so I do not think this is the problem. Thanks in advance.