All beautiful and elegant solutions! I am going to start with the AN4 to 1/8th fitting as that is the easiest at the moment to get back in the air and probably have TS make me something a little more booshie shortly after!
For the fittings, do you put anything on the threads for something like this MAP application?
Thanks for all the great input and suggestions. This site is a goldmine.
F-18E/F, Mk.58, CF-5