All the knowledgable people out there in HTF land, please help me with this. My shower head is releasing a very high pitched noise intermittantly during a shower. It's not too bad for me, but my SO is being driven up the wall. She wants another showerhead but I don't want to spend the money. I've taken it off, checked the rubber O ring, replaced the teflon tape, and put it back on. Still yells at me. Has anyone had any experience with this?? Anyone with suggestions!? Thanks in advance!