Just purchased a deck boat with a 1998 Evinrude 90hp 2 stroke. Power trim and tilt worked fine on test drive. When the boat company took the boat out of the water they raised the trim to put in on the trailer supports. I noticed when I got home that the motor was raised about one half inch above the support rests (supports not touching) and it would not go back down. I can hear the motor run when I use the switch on the motor. Motor will not go up or down now. Where do I start looking? Is there a bleeder I can open to get the motor back down on the tilt rams?