Repaired. Thanks. Speedo Cable Leak Repair

Hello Members. I am nearing the end of my 65 Dart Revisited II build, and today I poured the fluids into the engine, radiator, differential, PS, and transmission. Everything was a go, but the speedo cable leaked where it comes out of the transmission. The leak is where it turns from the sleeve that bolts up to the transmission where it transitions into that wrapped cable material. Is there a way to fix the leak in anyone's experience? I have three, but the other two have a small hose clamp wrapped around at the same point, so I suspect those are not good either. Just a thought on a repair would be helpful. Thanks for the help. sgrip65