OK , there must be somthing wrong happening here. While I have no direct experience with this model, 1.5 years for a belt = a major problem some where. If there was design fault on the mower MTD generally dumps them down here cause Aussies are stupid & none of them know how to use Google. So what exactly do you mean by "go through". I service a lot of the Stiga, Husqvarna & Jonshoreds with timmed belts and I have never replaced one to date even after the blades have crashed into each other and near cut each other in 1/2.