never done this and i'm afraid of breaking something. my tub faucet started leaking really bad, more like running freely. i noticed it leaking pretty bad and tried turning it tighter, then turning it on and off, but it just ran more and more freely each time i turned it back off. i had to turn the hot water off and have been trying to figure out how to get to the washer. i got the knob off, but i don't see anything that looks like what i'm finding on various web pages. the knob is connected to a square shaft i though might screw out, but it dosen't seem to turn and i'm afraid maybe it's not supposed to. am i on the right track? just want some assurance before i try turning the shaft harder. 'cause all i see if this shaft dosen't come out is going into the wall after the whole faucet, and then i know i'll be in over my head. any help appreciated. thanks.