I have 4 Polaris atvs all sportsmans and my o3 sportsman 700 and the 05 sportsman 500 sound like the valves or rockers need to be tightened. Has anyone had any issues or noises like this and any solutions? Anyone know what the rockets torque specs/ adjustments are? Also I have a vibration sound coming from the right front side of the motor on my 03 when you give it more throttle it goes away. I thought at first it was a loose heat shield but everything seems tight. any suggestions?