the last couple of times i took my 1993 25 ft I/O Fourwinns and went
around 25 MPH (4000rpms) the engine revved up and the boat slowed down
as if the prop was slipping. the first time I thought that I may have
hit a line but since it happened twice I think that something is not
right. at slow/medium speeds it is fine. Any ideas at to what is the
problem? Do you think that the prop/hub is slipping, and if so what can
be done? Could it be the transmission? any other ideas. We will be
hauling the boat out of the water in a few more weeks (darn that NE
weather)