I didn't find any decent guides on ptfe fittings, which are different from aluminum compression fittings I've used elsewhere on the build. So here's a quick write up for the curious.
I started with all my tools in one place: lubricating oil, dowel, wrenches, cutter, and a small flathead screwdriver. I highly recommend leather or thick rubber lined gloves to keep the frayed stainless steel wires out of your skin.
First step is to pull apart the fitting and ready the ptfe hose. The hose has a dumb end and a smart end. You put the first fitting on the dumb end then check/mark the hose length you need in the car. Finally, you cut the hose and assemble the smart end you just cut and you should have a perfect fit.
Here's the steel -3 an ptfe fitting in all it's glory. From the left, the collar, the ferrule, and the main fitting.
Take your dumb end and slip the collar over and push it down out of the way.
Then take your small screwdriver and peel the braided wire away from the teflon core. Be careful around the opening otherwise you'll have trouble getting the ferrule on.
Take your ptfe dowel, or carefully use the screwdriver, to round out the opening of the teflon hose, but try not to flower it outward, again the ferrule is a tight fit.
Now slip the ferrule over the end of the teflon hose but make sure it's inside the braids you separated. Push the ferrule all the way down until it seats fully, you should be able to see in the opening if the teflon seated correctly. Some I could do by hand and others I would need to use the table to force it in.
Push the main fitting down through the ferrule and pull the collar up to about where it is in the pic. It should get to that point fairly easy by hand.
Finally, add a little lube on the braids and threads and start winding the collar up to the main fitting. This is a pain and after a dozen of these you'll really start to feel it in your hands. I used a wrench to help spin the collars up to the fittings and a little lube goes a long way here. Once you get the threads started go slow to avoid stripping the fitting or collar. Don't expect the collar to fully seat on the fitting, if it does good, if it doesn't then don't force it. If you want to be really trick you can pre-intall the line to clock the fitting so its facing the correct way. Once they are threaded these fittings don't really swivel.
There you have it, 1 fitting down and 19 more to go!
A couple tips if you want unmarred fittings. Wrap the collar and main fitting in vinyl or teflon tape before you wrench on them or put them in the vice. Lube is super important! I stripped 2 fittings thinking I could do without.