Hi Marian. Are these hints from UHS or from the walkthrough? I'm wondering if I should just look myself if it is that involved, rather than have you keep copying stuff over for me. I don't want to waste your time.
Regarding Hint #1, I have been back there and talked as much as I can to the bartender and the graffiti punk, several times. (And every other character in the game.)
What do you think? I'll leave it up to you.