I found a horn I had bought off ebay about a year ago or so stuck in a box and as luck would have it, it just fit the bottom mount. Maybe slightly smaller than it should be. After heating the horn and fitting it to the mount it has just a slight gap on one side. Thats all I can do for the moment as the top parts went in the mail today for Roy to figure out. :haha: But it's a start.
Swampy, Just make yourself a wood form that has a slight taper. Heat the end of that horn and insert the form and lightly pound the form into the horn. That will stretch the horn out and get rid of that gap! Go slow and keep that horn very hot as you do this.
Rick