Mike was having a difficult time getting the white filler reattached. He had to keep loosening two screws which ultimately allowed the entire assembly to move back and forth horizontally. I put a small bead of caulk along the back edge of the chrome collar. It's all firm and invisible. I have already had to caulk around the drain of this thing about 5 timies already. I was here the day the builder installed this enclosure and I called it a factory second the minute looked at it. I could go on but enough. I'm happy with the way it turned out. Thanks again Mike.