I have a 2nd floor shower with a compression style drain. In cleaning the drain recently I noticed the pipe seems to move. Or more specifically, there is a white piece of something that looks to be attached to the black piping. It is the white part that moves. I cannot tell yet if the black pipe moves with it or not. In investigating I found it can move down about 1/4" and then side-to-side the same amt. It does slip back into place, but my concerns are 1) is whatever this is supposed to move like that such that I can still use my shower in peace, or 2) if it is not supposed to do this, can it be fixed without cutting in from the ceiling below?
P.S. I cannot tell yet if it also slips out of the compression gasket or not. I'm afraid to remove the compression nut to find out...
