I have a 2018 23SSBXP with SPS and a Yamaha 175 SHO. The prop is a Reliance 14.5 x 15 SS. With myself and my wife 2 small children nothing else on the boat I was only able to get 5600 RPM and 38 MPH max after playing with the trim quite a bit. I was expecting top speed to be higher and rpm to be a little higher. I am mounted in the highest hole #1 so motor is at lowest position in water. Seems I'm lacking some performance. Can anyone help me out here. Live the boat but I was hoping for a 44mph top speed and around 40 with 4 ppl on it. I test drove exact same boat brand new 2 years ago and hit 42 with 2 adults not even trying or playing much with trim. Thx in advance. Rob