The hatch hinge is spaced up for air flow through engine box. It fits well other wise.. What it needs is a dump gate or some sort of air out vent if in fact it ran better with the spacers.
Are you serious ................................... Ugly = ugly= ugly and to tell you the truth from the looks of the pics and the running surface it looks like one......very- wishy -washy boat .Just my 2 cents and i very well could be wrong .