Kelly,
I would recommend that you recover the horn cap, then add a horn wrap which would cover the bare stem of the horn. This way, you wouldn't have to remove the fork cover which can be a bear of a job, and may even require a whole new fork cover in the end. There are a couple of "how to's" in the Leatherworker and Saddle Maker Journal, or Dusty Johnson covers this in his saddle making book (about $20.00).
Ron