i have a 1995 225 hp 3.0L efi that runs all day at or around 4200-4500 rpm,my problem is that when i run her higher than 5000 rpm,some times 4600 rpm, she just dies and the boat bucks, when i shift to Neutral the motor is still running. When i throttle back up to 4200 she rides great. only in the higher rpm range is this problem happening. help !!!!!