I mow a lot of yard and have had trouble over the years of wearing out my riding lawnmower in about 3 years---I've had lots of brands. So I decided to buy a John Deere hoping to get it to last a little longer. Well, this is year 3 and I've had the plastic hinge break, the bolts that hold the motor on just fell off, tearing up the muffler ($200plus), and the deck is having vibration problems. Also I think it's getting weaker. My son bought a Deere last year (bigger and better than mine) and it's bolts are falling out. His is still under warranty, luckily. Am I just expecting too much or what?