Shahinian Obelisk vs VandersteenTreo

Well, it's the driver. Took it out completely, checked it, it's off center. 
The seller suggested to take the speakers back, contemplated his offer, decided I want to keep them. 
So next week the driver is going to California.
CJ pre is burning in with a new Tesla tube. 
Will probably look for a Golden Lion Genalex, as they suggested on a CJ owners forum.  The Vandies have a somewhat dark sound in my setup Ann's room, so the Golden Lion will probably make it brighter, closer to neutral.

Ann's room=and room.

As I suspected. If I understand your description of off center, you have a voice coil skewed in its magnetic gap. Good luck with your repair.
Cheers,
Tim

Yes, I suppose you are correct in your description.
 Thanks.  I will try to fix the problem locally, and if this fails, will send the driver in to RV.

@ja_zz 
I don't know what 'off center' means, in this case, but
Do you think it was damaged in the shipping?

It was generous for the seller to accept the speakers back.
He sounds like a 'Stand Up' guy.

For me, I would send it to Mr. V. as his drivers are made to his specifications and I would doubt anyone else knows what he knows. (I also wonder if he needs the driver from the other speaker in order to get them balanced)?-Ask Johnny. 
A second reason to send it back to California is that Vandersteen constantly upgrades their speakers and I am sure they would need to see your driver in its' pristine state in order to affect the proper repair. If you have it repaired locally, it may get altered so that should you still need to send it back, they might have a problem putting it back to original spec. as they don't keep records of their upgrades.(Though I wonder why they don't). Of course, I am being a bit paranoid, but I want to save you from anymore trouble. 
A third reason is that should you want to sell them, you would have all the documentation showing they were put back to original by the manufacturer.
Lastly:
When In Doubt, Contact Johnny R!
Bob