I've gone through two motors, a Force 85 and a Merc 75, bought both of them used over the last 2 months. The Force was a dud from the get go, the Merc just died on me. Needs a rebuild. I'm definitely not mechanically inclined so I'm looking at another motor. <br /><br />It's a Yamaha 90 HP 2003, the owner purchased an extended warranty from Yamaha till 2008. He is asking $5200 for it. Is that reasonable? Anything I should be on the look out for?<br /><br />Thanks in advance.