With all the eXmark owners here, how many have had trouble with the tension spring on the deck belt? Just want to know if I need to look elsewhere besides eXmark to find a better one, or have I (and a few others) just got hold of a bad one. Do most last several hundred hours or more? Or less than 40 like this one? Just looking at it, if someone had ask me how long I thought it would have lasted, I would prob. have said forever. Just hate to spend 14.00 every 40 hours. Anyone else been having this problem?