I have an old 7hp early 70's 2 stage blower from Ariens. It was my Grandparents bought new and serviced yearly. It has lasted almost 40 years! How much longer will it last and what are it's faults or weak points from the factory? It is a tank and really works great still and I added electric start 2 years ago so it is much easier to start now! I live in Vermont so she isn't babied but I'm just curious if I need to start worrying about breakage on any major parts. If I ever do need to retire her are the Ariens made today as good as my old battle ax?