[RayChez1]

I have been looking at the link that shows the different manifold pumps and I notice it has a check valve that could be sticking also. So it comes down to two major places where it could be leaking through. One is the check valve and the other is the pressure head on the cylinder itself. If I was you guys that are having problems with the slide creeping out, I would call Power Gear and ask what the possibilities of the problem and where it might be. It also gives a phone number to call 1-800-334-1712 for information on trouble shooting and cost to repair.