Pump that actuates the cylinders to your engine hatch? Mine operate smoothly and equally. They take the hatch all the way up but when I bring it all the way down, It won't hold down for any longer than 10-15 minutes. then hatch lifts up about .750" after that.

I assume there is air in there. I don't want to open a line an foul up my sanitary bilge so my next bet is to open a line at the pump which is under the dash/console. It will be miserable to get to but not at bothersome to clean up spillage.

I tried to get a pic of the pump but I could not hold the camera still enough for the slow shutter speed needed in the dark. sorry it's blurry.