just rerigged my xr 2002 w/ a 15" mid, ally cut sporty, running a 260(290 hp at pshaft), using a 30 et, pshaft is even w/ the pad, 9" of setback. boat gets up to 110 ok(felt much quicker w/ a bob's case), but will not go faster, at 110 i'm almost to 3/4 throttle, the additional throttle does nothing. any suggestions???