Need some advice on replacing a B&W tweeter

Just a surprising update on this:

Turns out that either the speaker had a bad tweeter in it, or I pushed it in so far that it damaged it enough to not work. I brought it back to the guy that sold it to me. (Dave at Future Sounds in Burlingame, CA)
The speaker itself is about a year and a half old. The first owner returned it to upgrade, and so I bought it about a month ago. Anyway, instead of trying to pull out the dent to see if that would fix it, Dave just pulled the whole tweeter out and swapped it for a new one--right there on the spot. That was it...no charge...no nothin'! I'd say that's pretty good service!
(I'm just glad I brought him a Starbucks gift card for being willing to look at it) :-)

Thanks again guys.

anyone who knows how to replace a tweeter on top of nautilus speaker? I ordered a new one but don't know how to replace it on a HTM3s. any step by step instruction will be helpful and greatly appreciated.

Remove the grille.....it is held on by a magnet. Then give the tweeter a twist.....counter clockwise, If I remember right. No tools.....really easy.

Future sounds is one of the few great audio stores around San Francisco. Not pushy, friendly and helpful. 

My LCR60 S3 tweeter is pretty mangled, afraid it DOES impact the sound. They are offering the DIAPHRAGM on ebay and other places for little cost (under $20), but not the whole speaker (ZZ12939 ??).

How does replacing the diaghragm only work? Any links? Obviously the leads need to be soldered back on. But is gluing of the diaphragm needed (like refoaming)? How to ensure voice is conentric in the gap? Does the ferrofluid (not even sure if the tweeter IS fluid cooled) need to be topped off/replaced as well?

Or better off buying a complete tweeter?

What B&W models use the same tweeter (if any)? Found this list (no idea if accurate, or only applying to the diapgragm).

• DM600 S3
• DM601 S3
• DM602 S3
• DM602.5 S3
• DM603 S3
• DM604 S3
• LCR600 S3
• LCR60 S3