I tried the wax paper, but only for one night and only one layer. It seems the mag. release and safety are rubbing the holster, there are marks that align with their position.
Our Forum member, Lobo, is a custom holster maker and with his holsters he advised to use a heavy plastic bag, wrap the gun and put in the holster for a day to loosen up, and it does work.
I asked this same question a month ago. I didn't do anything as someone said it will wear in with some time. Mine wore in fine after two weeks of pulling the gun out and putting it back in once or twice a day.
the original point and click interface, by Smith and Wesson