First.. I don't understand why I have TWO identical posts.. sorry about that.
I've checked all connections and I have no leaks anywhere.. nada.
Yes, I've left if that way for a week.. and it DID shoot out like a firehose. I did turn it down to 15 and bled it. After bleeding the head pressure off the kegs, I have a friendly pour... no firehose when I open the tap fully. No real head foam when I open it fully.
I probably don't have correctly clean glasses.. I usually just rinse the out under tap water... While that may have issues with head retention and bubbles collecting on the inside of the glass below the surface, , I wouldn't think I should see no carb'ing/bubbles in the beer itself.
I don't really mind not seeing the perfect head in my glass.. but, it would be nice to see the nice little bubbles happily rushing to the surface..