64 Dart Heater Cable Repair and Lube Recommendation?

So it looks like first the sheathe went out of the ferule like crimp then pulling the cable pulled the sheathe to outside of the crimp and blowed it open. I would finger out how to get it completely apart, clean everything, correct the damage, lube well and reassemble. I might put a little effort into tightening the pot metal crimp onto the sheathe if I can find the right fit of something but... If my cable slides slick enough the sheathe might never move again.