I just got this boat and not real happy with the performance. It has a Opti 150 Pro XS with a 23 Tempest only turns 5200 rpm no matter where the jack plate is set. I raised the engine to 3.5" below the pad and that did nothing no speed or rpm increase.It runs 59 mph now but I am concerned about the low RPM's. It's back at the dealer to checkout the tach and to verify from the computer what RPM's it was really turning.