I've been reading about how everyone loves the Gator Magnum blades. I went to Landscapersupply and Greenline Dist. to possibly order some but the OEM # at Greenline differs from the Exmark parts manual. Landscapersupply does not give a cross ref #. My mower is new and I haven't had to sharpen yet so I don't know whether it's a 1/2" or 5/8" hole. Also, neither site says that they are 'Magnum' blades. Help me out... I want to get the right blades...I want the highest lift, best cutting and best chopping blade I can get...without using doubles. Or do they not work well alone? THANKS!