Pal, you've had a nightmare for sure. I hope the dealer that has been performing all that work has documented your problems and will be able and willing to intercede with Mercury on your behalf. I believe that is your best hope for a good resolution. There is a ton of those engines in service. Mercury has a good rep for standing behind them - to the point of covering some failures beyond the warranty period. For that to happen, however, a well documented case will need to be made to Mercury by the servicing DEALER. It should also be your dealer that gets the Merc rep involved to inspect the damage. Wish you the best of luck getting some relief.