Just got a box of Gator Magnums & they are all seriously unbalanced. Balanced one set & had to grind deep to centre hole & a good section of the cutting edge. Tested the rest & they were all off like the first set. Will be returning these blades. Some unbalance is to be expected with new blades but this was excessive. Box of reg. hi lift Gators in same shipment was nearly balanced. Anyone had problems with the Magnums recently?