I have a Cub Cadet HDS 2155 that is going through belts on a regular basis. I put a new belt on and it lasted one month! These belts are not cheap. It is the belt that goes from the engine to mower deck. The spring tension is at the stock setting. I also think that maybe mowing thick grass might have something to do with it but I just don't know. Any help or suggestions would be appreciated.