I have the recurring problem of leaks - due to the plumber's putty around the flange on the top side of the drains. I've tried using a lot of putty, i've tried a little putty. I've tried as tight as I can turn, and I've tried just snug. They drip about a dozen times before I get them right. I use all the correct washers on the underside.
What am I doing right? What am I doing wrong? I've heard of using silicon instead of putty. Should I go this route? I need to be sure I get the bathroom leak fixed because a new drywall ceiling is going to cover it when finished.