I am turning a 23 pitch fury 3 at 5800 to 5900 rpm. Mercury 4 stroke 250 pro xs.No rods or equipment in front storage. Only clothes in the back boxes. Half tank of fuel, and live wells empty. 2 guys, top speed is 62.2 mph. By myself it will get up to 64.4 mph. Hydraulic Jack plate. I have have had many boats in the past. This is the worst for speed. Two others have driven it with almost identical results. Everyone I have talked to around the lake says their boats are running 69 to 74 mph fully loaded. 12.8 hours on the motor. Just had the 10 hour service done. It is back in the shop to figure it out. Help me with suggestions. Talked with another dealer about it. He said I shouldn't be able to drive it at top end without a wild ride, with the stated conditions of weight. I need help with suggestions. The other dealer suggested a 24 fury.