Subtimbie

Im sorry, but Im new to this forum and dont know how to start a new thread, but I have a 2011 Outback and the timing belt tensioner (Beck/arnley) failed after only 60000 km. I change my timing components religiously every 105000km. The tensioner lost its fluid and the belt slipped, as a result the engine is pooched. I enquired as to the Beck warranty and it is only warranteed for 12000 miles or 12 months. It would seem to me that if a critical component has a required maintenance interval of 105000km one could expect a component to be guaranteed for the interval. The Beck rep insists that their parts meet spec, if so , it should be warranteed for the interval. The whole point of changing the timing components is to insure against catastrophic engine failure. Has anyone out there experience a premature failure and any though as to a possible recourse available to me from Beck?