Hello from Austria,
I found this old thread about the Obelisk upgrade and want to add my 2 cents.
End of 2017 I decided to send my Obs (2002) to Vasken Shahinian for an upgrade (best possible - specs 2017/18). After his assessment I agreed to a complete reconditioning - the simple reason why: I love my Obelisk, I love the sound, I even love the veneer (cherry)...why buy a new pair when an upgrade can be done within a reasonable price-range ?
They modified/changed almost everything (except the super-tweeters), sanded and oiled the cabinets, added new grilles and rollers and what can I say ?
They look like new and even out of the box the result was way better then ever expected.
I posted some pics from the passive radiators (they are much bigger - so they had to do a lot of woodwork too) in another forum - I hope it's OK to add the link
https://hifiwigwam.com/forum/topic/117059-shahinian-owners-club/?page=4&tab=comments#comment-2241486
My conclusion - worth every penny.
Cheers,
Ewald