Hey Mo, I just went back and looked at your video of the motor running. I have a question. In the video it appears that the motor on the jack plate is the same height as if it was on the transom itself.....that being said how far below the waterline is the cav plate? I thought about the engine too, if it is new enough it might have a rev limiter on it to keep from overheating.....could be bad thermostat, I will ask my mechanic buddy and see if he might be able to help. I know that on the new verados they will shut down to 1400rpm when the computer detects a failure. My friends brand new 300 had a fuel filter clog and the engine would only run up to 1400rpm. Just trying to help ya, I say if the motor is too low then just take the transom out and make a new 20" board and call it done....its a pita but you have already done it once and the straight piece on the top is easier than cutting that radius.
