if i trim both drives up one of them will slowly leak down. takes a few minutes.
i had the trim lines apart last month and refilled the oil in the pump i know the air is suppose to work itslf out what could it be?

rams can leak down internal if ball bearing are not sealing

Could also be a bad trim pump valve.

There's a problem I have seen happen on several TRS trim cylinders. The bolt that holds the piston on the end of the ram shaft loosens. The piston has several check balls in it with springs on them. When the bolt loosens the tension comes off the springs which are holding the check balls closed. If the bolt gets loose enough the springs and balls will actually fall out of place. If it gets to that point it will start tearing up the cylinder and piston inside there.

is that trim pump valve rebuildable or would i need a new trim pump?