[masraum]

You've probably ignored that voice a time or two and learned that it's a voice that you should heed.

I had something similar once. I think I had replaced a toilet or the wax ring on a toilet and had the head snap off of the valve when I shut it to remove the toilet. I didn't want to have an issue with trying to replace that valve. I had mental images of the pipe that it was screwed to twisting off inside the wall, so I called a plumber. I decided that I would have him do every valve in the house. I was laughing on the inside when he was able to screw every one off without a problem and had all 11 of them replaced in about 20-30 mins. I wasn't angry, because I was pretty sure that the only reason that it went that smoothly was because I had hired a plumber.