I have a 1996 Nitro tracker boat with a 75hp Force on the back. Sometime the power trim UP won't work. I'll press the button at the console on the throttle up and nothing happens, I will then press it down and the motor will lower. If I press the up button right after it will then go up without a problem. After that it will be an intermittent problem. Sometimes it goes right up and other times I'll have to press down first then back up? Any ideas?