I'm playing a 1955 The Martin tenor lacking it's original neck. Right now I play it with a vintage King neck (don't know which model). It's in tune and has a fine sound, but I'm not happy with the altissimo yet. I've checked it with all my mouthpieces over months playing each for a reasonable time, but the high register still lacks response.
I'm now thinking about replacing the neck by another one (silver) to enhance the response of altissimo.
Do you have any experiences on that with your Martin tenors? Or any ideas/recommendations?