I can hear and feel a rattling sound coming from the serpentine belt tensioner. I installed a new pulley bearing no change, I bought a new Dayco pulley with no change. I then noticed that the inside diameter of the bearing is slightly bigger than the outside diameter of the shaft on the tension assembly and has a little side to side play. Has anyone had any issues with the replacement bearing/pulley for our cars. Where can I purchase a new serpentine belt tension assembly ? Thanks, Kyle.