I got mine today.
It is a very tight fit for sure. Ultimately, I ended up heating a Phillip's head screwdriver over a flame and shoving that in to widen it up. I left that in while I heated the shank fitting for a bit and then took the screwdriver out of the tubing and quickly shoved it on the heated fitting. It worked but I was still only able to get it about half way on. I also used some clamps just in case. *
I used twenty feet like Demon did for 38F, 11 PSI and get a nice slow pour which is what I like personally. I think my vinyl tubing was 15ft if I remember correctly and it seems to be about the same speed.
* EDIT: This was with 1/4" barbs
Thanks Outside, it couldn't have been easy to measure all of this stiff line out.