I bougth on eBay a Sheaffer pen... I was expecting a ink sac type but this one is more complicated to fix. I was told on Reddit that is a Sheaffer Statesman so I was advised to reach Mr Gerry Berg to assist with the repair. I sent him an email but no answer so: Anyone has his contact info or the name of another person that can help me with this repair??? I'm located in CONUS.