I remember discussion recently about some who had modified the discharge opening on their Hustler decks to improve cut and discharge. What's the verdict... has it provided improvement? I have a new 60" Hustler Super Z, but it doesn't have the new design deck. Even at normal speeds the cut is not as good as either my Exmark or Walker. If the mods would help I would be interested in details on how to do it, and the approximate cost (I understand new blades and spacers are required also). Thanks in advance for any advice from those who have experience with this mod.