OK, so here's the sitch.
I'm working up a Mexi-Conn tenor.
The neck fits into the receiver with what seems to me a normal amount of snugness. When it's in there it doesn't wiggle around. Cursory inspection indicates the neck tenon is decently round. If you rotate the neck in the receiver it seems to have no tight or loose points, it's about the same all the way around.
Yet the neck will not tighten up with the screw.
The slot in the receiver looks normal, the sides are still well apart, not crushed together or unusually distorted. It looks like there is no "stuff" in the slot that might keep it from closing up on the neck. I replaced the slightly bent and stretched brass neck screw with a steel screw, well greased.
Yet the neck won't tighten up with the screw. I have used more than usual force on it.
If the neck tenon were worn too small it seems that it would be loose in the receiver before attempting to tighten. If it were out of round it seems that there would be some looser and tighter places as you rotate it round in the receiver.
Any ideas? I know I could get it to tighten up by cutting the slot deeper but that compromises the sealing. I have had a lot of saxophones with detachable necks and this one looks (to me) just like all the others through the years that worked fine.
I'm working up a Mexi-Conn tenor.
The neck fits into the receiver with what seems to me a normal amount of snugness. When it's in there it doesn't wiggle around. Cursory inspection indicates the neck tenon is decently round. If you rotate the neck in the receiver it seems to have no tight or loose points, it's about the same all the way around.
Yet the neck will not tighten up with the screw.
The slot in the receiver looks normal, the sides are still well apart, not crushed together or unusually distorted. It looks like there is no "stuff" in the slot that might keep it from closing up on the neck. I replaced the slightly bent and stretched brass neck screw with a steel screw, well greased.
Yet the neck won't tighten up with the screw. I have used more than usual force on it.
If the neck tenon were worn too small it seems that it would be loose in the receiver before attempting to tighten. If it were out of round it seems that there would be some looser and tighter places as you rotate it round in the receiver.
Any ideas? I know I could get it to tighten up by cutting the slot deeper but that compromises the sealing. I have had a lot of saxophones with detachable necks and this one looks (to me) just like all the others through the years that worked fine.