rubbing spinnaker halyard

[Brion Toss]

Hello,
This is one of those cases of overlapping technologies, with your spinnaker halyard gear. meeting up with something it wasn't designed to deal with: the jib furler. The best way out is to mount a somewhat long crane, with the end offset to one side, so the block, and thus the halyard, do not so easily come in contact with the swivel. You'll still need to keep the line off to one side, but it will be easier.
Is your current crane short? Does it lead directly forward from the mast centerline? If either one is true, that is the problem.
You are right about the swivel being where it belongs, to prevent halyard wrap. It also put the swivel over the bearings, for less foil deflection. So don't lower that.
Fair leads,
Brion Toss