Myself, I use the BVM clunk line, it seems to hold up very well over time, I break with tradition though, I drill my clunk out and solder brass tubing into it, then on the end solder the next size up tubing creating a nipple of sorts, then safety wire. I usually make this hard line about 2/3 of the tank length so It can NEVER double over and its got plenty of weight, been doing this on my jets for a while now, just works…
