Quote Originally Posted by GM View Post
...Bummer, guess if I ever need one of my 515Bs re-coned I'll have to sell them...GM
(OT response, but probably worthy anyway.)

(There may be 2 options for 515s, so you may not be out of luck).

This should be self-evident if one peruses the various driver/kit lists from the 70s thru GPA, but the concept doesn't seem to have widely sunk in, and IMO is at least in part the reason for some of the expressed dissatisfaction with GPA recones. Look at the wide array of kit numbers used in various versions of any given long-lived model on the '75 reference. Any change in software created a new part number. Some may have been from different vendors (Altec didn't make their own cone kits), others used newer materials and methods. The consolidation of all those historical versions into a single "what's available/best choice now" version was a decision that Altec made way back when (see the parts lists from the 80s & 90s). This seems to have been translated somehow as GPA's "fault", which it isn't. It's a practical decision that Altec made, and GPA is stuck with.

Would I like to have kits available (in made-yesterday condition) for all my various drivers? Of course I would, but I have to accept that it ain't any more likely to happen than me getting my 18yo body back. People move on and die, companys get bought and sold, and we make the best of what's dealt us. "Progess" may be subjective, but change is inevitable.