My tilt & trim motor is not operating,but I was able to lower the unit by the release screw to the top of trim. I am trying to get it down somewhere into trim. If I take the boat out for a run will the back pressure push the motor down if I leave the release screw open, or will the T/T motor be engaged and not let the motor lower any further? 
1988 Evinrude 225
1988 Evinrude 225