Have an 04 h51db with an 03 Mercury 90hp 2 stroke. Has 6 inch jackplate, 22p powertech prop, prop shaft 5” below pad, 5500 wot. Was running 51 mph gps then added two more batteries and speed dropped to 43. Doesn’t seem to get on the pad anymore. Adding a passenger and full livewell does not affect the speed. Only the batteries hurt the speed. Any advice on best setup/ weight distribution for this rig? Thanks