I just purchased a 98 209 Gambler with a Mariner 3.0 EFI. I'm running a 27P Trophy. The motor is 3 1/4" from boat bottom to motor nosecone. At 75mph the boat is uncontrollable. I have plenty of throttle and up-trim available. This is my 3d bass boat and can usually handle chine-walking without difficulty. Should I raise the motor? The jack plate is all the way up but I have one more hole in the motor bracket that can raise the motor. Thank you for any suggestions.