If its just leaking from the capsule seal that is a common fault and easy repair. They ship these from the factory with a cheap white PTFE seal. PTFE is malleable and deforms after a while. I fit a polyurethane replacement which is the correct material to use. If this is where the leak is I can post you one F.O.C. Just take note the seal retainer ring has a left hand thread.
Baz