Can we get a serial # on this 250XS? Although I don't agree that these seizures are common- they do happen, and I agree that you should speak with Merc about it. Your engine will need to be AT a Mercury (authorized) Dealer.

Can't say that they WILL do anything... but it's possible. Cause of failure will be the key, of course.

Got any pictures of that piston, cyl. and the rod/bearings?