I have a procraft 1750 (bass/skiboat) with a 1987 mariner 150, 6 inch jackplate. Here's my issues, have to tuck the engine all the way down otherwise it will porpoise until at least 40 MPH, would not be possible to run without my dolphin. Extremely difficult to hang on to the steering wheel, so much resistance. I have tried raising and lowering the jack plate with no change. Any ideas, or should I just remove? I can't tell if there are four bolts that hold the engine to the boat or just two on top, seems like it would be difficult access to the bottom ones.Thanks so much