I have a 2009 2275 RLi series two tube with a 2009 115 merc. The motor is mounted in second hole from as low as it can go. I am running a Black max (77340A45) 13 pitch prop. Problem being is i cannot get optimum RPM with this set up.... I see alot of people swear by this prop with this size benny. When i trim past 25% it will blow out and at 25% trim i am only at 4900-5000 rpm. optimum for this motor is 5800-6400! Max speed i have seen with my wife and kids with 1/2 - 3/4 tank of fuel is 23-24 mph. I also notice that the front will never really come down once at speed. So i guess my question is do i raise the motor a hole or lower it a hole to as low as it can go? I know this subject has been beat to death!! I have spent hours searching for an answer with no luck!