Plumbers but.

Here's a few pictures of how I make a plastic tank into a uni-flow tank. Turn the vent tube and the uni- flow tube together to install the plumbing into the tank. It's easier to bend the tubes sticking out of the cap for a profile plane and to custom bend to fit on a full fuselage plane. Either way the tubes inside the tank are bent the same.
  I didn't get to fly the P-39 yesterday as I flew the same two again. At home I looked at the Shark 665 and removed the .46 and installed the ASP .52. Maybe today, after a trip to the bank, I'll test those two.