A 416 dilemma. What to do?

[bfish]

...Interesting point:
Altec didn't adjust the settings on the zapper for individual drivers. They built the fixture to do the ultimate zap regardless of what they put into it. They met the engineering goals by designing the magnet core to provide the proper field at full zap.

Now where have I heard that before... oh yeah;

...For production, you don't measure 'em, you saturate 'em and go to the next one.

Which is why, if the gap strength is below spec after zapping, there's something else wrong.