OK, I'll try to explain the problem. The offensive tool is a manually operated (pumped) grease gun. You put the tube of grease in, screw on the end, and then release the lever that is supposed to allow a spring to put pressure on the grease. This "loads" the grease down into the pump end where you can then apply the grease. My gun loses it prime, so to speak. (At this point, the lever retracts into the gun, and has nothing to do with forcing the grease down into the pump.) The grease comes out at first, but then stops. The cylinder is full, but the inlet to the pumping mechanism has gone dry. It seems that the spring (which should force the grease down to the pump inlet) is not strong enough. This is the third grease gun I've had that does this same thing. Am I using it wrong, somehow? Can the gun be modified to work? Does any of this make sense?