if you see the tiny hole on the side of the plunger tube fill it with PVA glue or hot glue and wait for that to dry then pull out the plunger and remove the rubber ring on the plunger and where the used to be wrap it in gorilla tape or bike rim tape then put the rubber ring back on but before you put the plunger back into the plunger tube get a healthy amount of grease and smear it inside the tube.