I have been reading through some of the old threads on getting a little more umph put of these engines...I know I am 6 cubes lower than the 115 and 140....so a big increase probably won't happen....however for what I have in it....I can afford to play a little....I have ordered a set of carbs from a 135.....I am looking for the intake filler blocks...I will find them and will install them...as well as a set of boysen power reeds....can someone give me a ballpark where to start on the high speed jets....I read they might overfuel a bit at WOT, I read the low speeds are fine....I have this on a 1986 bayliner capri, the boat is primarily used for fishing...I do pull a tuber and skier occasionally...I can get about 35 mph at 4600 rpm I am using a SS 17 pitch prop....