Hello to all--I have a Hustler Raptor that stopped moving forward or back last week. Found the tensioner spring was broken at one end, allowing the belt to loosen. Ordered a new spring, put out on today, mower worked fine. Made about 6 passes in the yard and it stopped once again. Second spring broken same way! Anyone know why this might keep happening? The mower is 4 years old and serviced regularly--this problem came out of nowhere, so any advice would be welcome. Thanks!