I recently replaced the trap for my bathtub and after looking at the waste and overflow decided that it needed to be replaced also. I have a couple of (potentially stupid) questions.

1. Which way does the beveled washer on the overflow go? Does the fat side go up or down or does it vary based on the slope of the front of the tub?

2. Somewhere along the line, I got the idea that when putting in strainers, popups and the like with plumber's putty, one was supposed to hold the top flange in position and turn the nut on the bottom, to avoid smearing the plumber's putty out too thin to seal. However, with a bathtub, this requires turning the waste shoe, which seems like it could be difficult to impossible, especially since I'm using a sch.40 glued w&o. Any advice?

Thanks in advance for any help anyone can provide.