Very motivated seller. Willing to work hard to "fix" the engine
- someone did that...
Don't love the boat until this is sorted or you have 12 grand laying around...
Your engine guy can only tell so much and that is depending on how far he goes to investigate. An engine not in operation for a while could have something as simple as water
system clogging. Or it could be another ball game
Factoring in 12 grand off the price
for an overhaul
sounds great from a buyer perspective but not so great for the seller.
The good news is you have a dialog going with the seller and he seems cooperative.
There is a night and day difference in enjoying a boat with a smooth, quiet and reliable engine vs. one you are constantly chasing problems on.