Jim,
Thanks for getting back with me. I hope that my delay hasn't caused you any problems.

As I read your question, I feel that it is a good idea to be able to remove the tailcone without disturbing the horizontal stabilizers. The vertical fin will need to be lifted up and rotated to allow access to the two panel screws on the top plate tailcone attach plate. See the attached photos for my tailcone. Notice the lead inside for CG correction.

I also think that metal servo arms are a good investment, but most of the metal arms are pre-drilled and tapped, with some tapped holes being a little too too large for a good clevis pin fit. You can buy long arms and drill them yourself like I do.
We don't need any slop which causes surface flutter.
Hope this info is helpful.