Tape is just a lubricant and has to be put on the right way it has to be wrapped so the tape does not come loose when you turn it in. If you loosen any fitting with tape it has to be replaced. The idea of turning back when you have the plug tight just doesn't seem right. Every good mechanic has a torque wrench in his tool box to make sure you have the correct tightness (I don't because I was just an old E-I tecnician). I just don't see why you would break a good seal when its done right. Of course this is only my opinion. Some of these guys forgot more about Ml than I will ever know. However I did work in a paper mill which was very wet and dusty etc.
Ken