OK Summer is almpost over and the boat is still not fixed. Mechanic has no new ideas.

I bought this boat off of what I'd have to say was a very dishonest owner.

The following has been changed, or isolated to not be the cause. First ran with alternative fule tank to isolate not bad gas, changed power pack, changed VRO oil pump, changed Stators, Mechanic tells me he has had the carbs all off, as I suggested to look for gasket leaks. He found the old stators to be burnt. However aftetr all of this still no fix.
Boat runs great going out, lots of power, no issues. turn off. REstart after about 5 minutes, breaks up surges at idle and no ability to clear out or run hard with throotle added. At best you get some bursts of acceleration, more ofthen just breaks up and sputters. Can hobble back to port at 3 mph.

I've seen others with claimed similar problems, but no posted solutions.

Please help!
So far