Since this thread has been revived, I'll provide an update. Back in April (2012) I brought this speaker to the local JBL-authorized service center for a recone (decided I would pony up the cash). After numerous failed recone kits due to apparent JBL factory kit problems with the voice coil, the local guy gave up and shipped the speaker straight to JBL to get them to recone it for me.
Months later and what I've been told from the local guy is that JBL is sending the speaker back...but they are NOT reconing it. It seems JBL is saying that they're no longer supporting these speakers (K series and presumably E/D as well?). I was shocked and after further questioning what I can glean, accurate or not we shall see, is that after numerous manufacturing problems with the JBL recone kits they can't seem to get things straight and have made the decision to just abandon their production of the kits.
Now it could be that local guy doesn't have the story right or something was lost in translation. However it works out, though, I expect to get back only the frame/basket. If anyone hears confirmation of the above or can de-bunk it please post. But this is what I've heard...just a PSA for the brothers!
EDIT: just to be clear, I wasn't the original poster...my update is for the K120 that had what sounded like a similar issue.