I used small screwdriver and hammer.
I insert screwdriver through the hole on top of sink and i beat down the brass ring.
Hard work and patience:thumbsup:
http://www.cpfitaliaforum.it/phpbb/viewtopic.php?f=8&t=4130&hilit=+tiablo
Sorry for post it in Italian.
Hi guys, this is my first mod.
Hope you enjoy.
Cheers from Italy