I have a 1992 Bryant with a Merc 305LX and a Alpha 1 drive. The trim and tilt are a separate button on the gear shift. If I tilt the engine all the way up then the outdrive will stay in the up position. However, if I only tilt the engine the engine will fall back down over a period of hours/days. I am also getting what appears to be water in my trim reservoir. Any suggestions on the best way to fix this problem? Do I need to replace the entire pump? Are the 2 problems related?