I own a 2012 Polaris Sportsman. I have not been able to ride it for a couple of months. I started it up and rode it around the house today. I drove it on my street and noticed that it was "hopping or rolling" on hard pavement. There seems to be a squeek in the right front. I noticed it rolling before and I had a torn boot on a back axle. I checked everything and all boots and axles are fine. Any thoughts? I admit that I am a relatively new owner and don't know much about working on these.