My 2000K1200LT has ABS, but the front brakes pulse a lot when used. The rotors were checked and deemed OK by a mechanic using a dial gauge. The tires up front were badly cupped so I changed out both tires. The same mechanic took off the pads and examined them. They appeared good for wear and even thickness. The rear brakes work good and have no pulsing. The front is so bad that the brake lever moves about 1/2 inch back and forth during braking. Any answers or ideas?????