Please do only perform this if you are experienced with electronics and mechanics, otherwise lend it in to a electronic service company is my advice .
There is 4 extra hex screws under the rubber dots, that you can pull out with a needle or something sharp and thin.
Then you will also need a locking ring bar tool to peel of the locking ring that holds the vol. nob, to put on lithium lube and pull it out and turn around the spacer if it is wrongly fitted
Yes the spacer on the picture shows how it was fitted wrongly up-side-down from factory.
You need to turn it around.
Then put on lithium lube on the fabric textile padding ring underneath the volume nob and on the plastic spacer including on the sides walks with a ear topz, then reverse the mounting procedure.
Turn the vol nob back and forth and you will feel the lube will lubricate and the feel will turn out like a high end remote.
I will in the next literation place a steel SKF bearing instead of using the plastic spacer so it will be almost identical like the the dCS dac vol nobs, but it feels good for now👍