IN 2007 I BOUGHT A YS4500 LAUN TRACTOR. IT IS A THREE BLADED MOWER, IT LEAVES A UNMOWED AREA OF ABOUT TWO INCHES BETWEEN THE CENTER BLADE AND THE RIGHT BLADE. THERE HAVE BEEN SEVERAL SERVICE CALLS MADE ON THIS MOWER, AND TI IS ALWAYS THE SAMEFIX. I AM TOLD TO CHANGE THE BLADES AND KEEP THE RPM UP.I HAVE CHANGED THE BLADES, WHICH I BOUGHT FROM SEARS, MANY TIMES, THIS DOES NOT HELP AT ALL. THIS PROBLEM IS FROM DAY ONE. MY NAME IS CLAUD LOCK AND THE MOWER WAS IN MY WIFE'S NAME, RECA LOCK. CAN BE CONTACED AT [email protected]. THANKS CLAUD read full review »