I was given a vacumatic from my dad and I cleaned the pen from the thousand years of ink stains. This is the type where the pumping mechanism at the back is made up of plastic and not metal like the earlier ones. The nib and the pumping system is intacked but for some strange reason the pen doesn't fill. When I filled the barrel with water liek an eyedropper it would just leak out of the back end of the pen where the plunger is if I flipped it upright and when the nib is pointed down, the water just dripped out of the nib. What's the problem with my pen?
Thanks
Brad