Drop the pen. Everyone knows no ink makes contact with a bracket sheet until Monday night at the earliest. Until it’s deadline time, pencils are preferred. It’s tempting to make big decisions about your picks while you’re still waiting for the fourth region to be unveiled. Don’t. In the next 10, 12 hours you will hear so many nuggets of information and reasons to change your mind that you will, over and over. That, folks, is real March Madness. To add to your confusion, here a few thoughts and tips about the 2013 bracket. ——— There weren’t any really fervent …