I recently came to own a Craftsman lawn tractor model #247288851. The mower had died. Unfortunately the cutting deck was activated so the belt was stretched out and needed to be replaced once I fixed the tractor. I went to the Sears store and got the appropriate replacement belt (Part # 954-04219). Well this belt is about 3-4 inches to long. They insist I have the right belt. Has anyone had a problem like this? Or know how to get around this problem? I have added a picture of the slack in the belt. The deck is in the cutting position. Thanks for any help in advance