64 Dart 273 with 4-Speed Speedo Cable Leak

The speedo cable is leaking alot out of the housing where the metal cable goes inside. I got new seal and o ring. I know its the seal is leaking inside so that's why it is coming out of cable. I think someone put the seal in wrong. Which way is correct and how far down does it go into the plastic speedo gear.20220428_172311[1].jpg 20220428_172336[1].jpg