I have a 2002 warrior , 0r should i say i had , I rode it with no problems whatsoever , put quite a few miles on it , never a hickup , today i sold it to a guy about 14 years old , he calls me three hours later , and says when he was unloading it , he wanted to take it around the block but when he went to shift into second gear the rear tires locked up . . Can anyone help , i have had three of these machines with no complaints.... what could have happened? he says it will go into reverse and move , and first , but no other gear .