Vaquero Antenna Top/Knob

[gator.mark]

Does anybody know how to remove the top knob of the radio antenna? (If it can be removed, that is).
I pulled on it, and tried to unscrew with little force, I didn't want to break it.
I want to put a antenna flag on it.
Thanks,
Mark

[cactusjack]

This is a duplicate post. You should be able to delete it.