Title pretty much says it all. Does anyone have any definitive info on the tubing size for the P1 Bio mask? I am preparing to work on the cheek port detail and want to make sure it is as close as possible to the original. I have seen a number of people using a cog shaped port detail, but to me, it looks like the original is more of just a sleeve than a cog. If anyone has better photos or information, I'd love to hear about it.