Steve,
Thank you and I will be in touch by email about a 3-piece with counterweights after studying options on your website (and what are "buttonholes", for example). I like your attention to matching the rods to a customer's individual needs, rather than a "one size fits all" take it or leave it approach. I will enjoy it more knowing it was made for me and not just pulled off a shelf and sent on its way.
And I'll be glad to build one, to your specs, Megalodon!
As for the button holes, my advice is that you won't need them. I decided last minute, right before I released my Equinox shafts a couple of years ago, to go ahead and offer a lower rod spring button, and corresponding upper shaft button holes,
as an option, for folks who (despite my assurances) remained uncertain as to whether "just" the cam lock could accomplish secure connection of shaft sections (it DOES).
My shaft was designed from the very beginning, with the intent to
entirely eliminate any need for the button/button-hole design; that type of supplemental attachment system is ONLY needed, when the shaft includes "light-duty" cam locks, such as the Minelab twist-locks. But, when a shaft is built with a PROPER, heavy-duty, clamp-type cam lock, this renders any need for the button/button holes completely unnecessary -- which then results in a much more "elegant" shaft. What I mean by that is, I think most would agree that having a lower rod spring button, and corresponding button holes in the middle/upper shaft, makes adjusting lower rod extension length, and also installation or removal of the lower rod, a rather tedious/cumbersome process. But, with the button/button holes eliminated (as is facilitated by the use of a properly designed, heavy-duty cam lock), the result is a much more user-friendly, functional design.
Anyway, bottom line, I rarely sell a shaft anymore that includes the button/button hole option. In fact, I'm in the process of phasing out that option. The intent of my shaft design was ALWAYS to eliminate any need for the button/button holes, and as folks have become familiar with my shafts, and the cam locks in particular, I almost never have a customer that requests that option anymore. My cam locks are not only heavy-duty, offering rock-solid, wobble-free attachment of the shaft sections, BUT ALSO, the clamping tension of the lock is
entirely user-adjustable. There is a thumb screw on the cam lock that allows the user to adjust clamping tension, thus allowing full control over just how tightly the cam lock clamps the shaft sections. As a result, any need for any "supplemental" attachment security (i.e. the button/button-hole design) is entirely eliminated.
Just let me know, if you have any additional questions. I'm always happy to help.
Thanks!
Steve