Kef 107 vs 107/2

I recently inherited a pair of KEF Ref 107 II's and I think they sound amazing. I do not believe I have ever heard any speakers like them :-) However, I understand from this thread that I should probably do something with them to make them sound better (change woofer surrounds?). I do not know anything about this, but I would really like to learn and could use some advice on how to get started, where to buy spare parts, what to look for etc. Could you help me please?
BR,
Erik

Since my previous post, I have replaced the 104/2s with 107/2s and 107/2 KUBE. The 107/2s had the surrounds professionally replaced shortly before I bought them. I cross them to the subs at 80 Hz, but in the setup I'm using (analog for an Oppo 95 to Cary 11a in bypass mode to KUBE to Proceed HPA 3) there is no bass management with DSD. It's obvious the 107/2s don't need to be supplemented by the subs for music. They are amazing speakers.

db

I stumbled into the audiokharma forum and found a thread that walks you thru recapping and replacing the ferrofluid in the tweeter. they also replace the 'opamp'? in the kube. I know this thread is ancient but the speakers remain favorites.