so one of my drives creeps up when stored down. I have seen loss of pressure before and one go down when being trailered, but never up on its own? Any suggestions??? thanks

Sounds like some ones playing with the trim switch when your not around.

Yea someones fooling with you

May be plausible if some air has been ingested in the system and is on both sides of the ram. Perhaps you have some air on both sides of the piston, and the air trapped on the "down" side is slowly bleeding off (perhaps through the crack/oring, etc. that allowed it to enter in the first place), thus allowing the air that is compressed below the piston to "expand" as it doesn't have as much resistance on the opposite side anymore.

Still would have the weight of the drive on it. I would think that would be pretty much resistance. If there was a crack or bad o-ring that was allowing air to go in and out it would certainly leak oil when under pressure.

Got any kids that like to play in the boat Fast Daddy?

water in the trim switch ??? I had one once that got full of water and the trim would run on its own.

Def not kids or someone messing with....I wish that were the case!! Air is what a buddy told me also, so need to ck there sounds like? Thanks so much for the input. Everyone on this site is always so helpful.