I bought a 2003 hunter 240 ~2 mouths ago. After a long trip(~2200 miles round trip), I noted that it was not towing as expected for my car(Volvo XC60 2020 T5, 3500lb towing, 350lb on ball). The towing issues where high engine rpm on hwy(>3500 at 65 to 70mph, vs about 2000 with out boat) and sway...