I have a 2007 Suzuki king quad 450 it has 3500 miles on it and i can hear a metal on metal noise in the rear. It has new cv shafts in the rear, new wheel bearing. The fluid in the rear end has been changed every 500 miles. it is really ****ing me off, I cant afford to take it to the dealer for them to look at it, they charge 150 an hour(rediculous). I was wondering if anyone had any ideas. Could it be from the internal breaks.