I feel bad about helping to pull the OP's thread off course a second time, but then part of me is not sure what the OP is even asking at this point. I mean you don't like the motor, you live with, replace it, or get rid of it, none of them are very fun options, but that's just how it goes.
And sellers ask what they want for a boat and if you can negotiate a difference price good for you, and if not, then not so good for you! It's not a conundrum without an answer, it's just a question with answers you don't like!