Bought my 500 back in Sept. and love it. Used it during deer season here in the Louisiana swamps and had no problems. I put a Superatv windshield on it which has worked well with one problem. My wife and I rode Sun. several miles down a gravel road and were completely covered in dust. It appears to be coming up into the cab from the bottom. Does anyone else have this problem? Does it have anything to do with the windshield?