Well
I have received the new screw with new ring. I 've tried to put it but the screw didn't turn easily. I had to turn with hard pressure on the screwdriver
Think i have killed a little bit the airbrush threading with my screw extraction, Whatever , the screw seems to be in the right place and my airbrush seems to work !!!
I'm already anxious of the day where i will have to remove it again.
pat