The halyard goes through a tracK?
I am having a hard time picturing what you are saying.
My halyard attaches to the top of the upper swivel, the sail head attaches to the swivel, and the luff of the sail is attached to the foil with the bolt rope and runs in the extrusion, but the halyard is not run inside of anything.
I'm with Brother Tim on this one -- I'd be really surprised to find out that there's a roller furler out there that uses an internal halyard. Halyard attached to the head of the sail; luff tape keeps the luff of the jib attached to the foil of the furler.
I think it'll just be a quick trip to the top of the mast to get the halyard and back down.