Shahinian Obelisk vs VandersteenTreo

Your speakers should have come with spikes. You can probably make your own.
Copied from the Vandy 2ce manual:

If you set the speakers on a wood floor, place a coin under each stand spike or use 3/8-16 thread carriage bolts in place of the spikes to prevent damage to the floor. Carriage bolts have rounded heads that will not put holes in the floor.

I believe all Vandies use the same thread size, but I might be wrong. In any case, try one and gently start threading. If it isn’t the correct size, it won’t thread easily.
I would suggest something in the 2-2.5 inch length. Also, get some nuts so you can lock them in place.
Are there Vandy dealers in Russia/Europe? It might make the process less difficult. A dealer might be able to make repairs locally and save you the hassle.
B

Call me at Audio Connection 
Verona NJ USA 
we can FaceTime your issue
 Probably a bad mid range from handling improperly and  easily repaired by removal and repair of just this driver call me at 9732391799
Best JohnnyR

@hifiman5 
Yes, you are correct. I was hoping the OP could swap out drivers and save the shipping costs. 
I was actually thinking about the Vandy subs.
B

Gdnrbob,
Thanks for the spike info.
Yes we do have dealers, but they only complicate things and slow them down: they outsource repairs, and, if I have to send a speaker for rebuild to RV, it’s going to be much faster to do it direct.
JohnnyR,
Will call you today.
Thank you.

IF they are same spikes as 5a they are very nice and IMO very reasonably priced for audio jewelry- i bought 6 when i made maple amp stands for my Vintage Mac gear to bi-amp my Apogee Stages..

you can bet that was a very interesting conversation with Richard

also IF you want most of the benefit of the spike but do not want to marr floors, they also have a machined aluminum cup with felt. i have tgese on my 7

makes tweaking placement easy ,,,,

good luck on the driver - hope you can do it locally