Cub Cadet LT 42 lawn tractor. Only 7 hours on the unit. Belt keeps coming off the mower deck. All springs in place. Everything appears to be working. However I can't seem to cut the whole lawn without having to put the belt back on. No easy task as I have to remove the belt cover to do this. Cub Cadet takes many days to answer an email. Apparently my closest service center is in another state over 50 miles away. I did a lot of research before selecting a Cub, did I make a mistake?