Re: Leaky Bathroom Water Supply Lines
Get some pipe thread compound, AKA "pipe dope". Remove the supplies and clean off the teflon tape residue. apply the pipe dope to the male threads. When you thread on the supplies, hold the line itself away from the joining by pulling on it while hand-tightening; this ensures that the washer inside the joint does not get bound up and only makes contact at the last moment. When seated hand tight, you can let go and do the last quarter- or half-turn with the wrench.
Remove not the ancient landmark, which your fathers have set.