Hi Can someone please help me as I Have just purchased a new mower with a 53cm rotary blade and a 6hp Brigs and stratton motor all works fine, but when I cut my lawn with mower on it;s lowest cutting level it was not as short as I would like, leaving the daisies etc the mower seems quite low to the ground, so it seems the blade is to high. Can I fit a spacer (and if so where can I get one) to lower the blade or will this effect the performance of my mower. The Blade is attached by a central bolt with 2 lugs either side that fit in holes in the blade. Never had this problem with my Old faithful Rovermower.