Canfieldnosedive, I'm about 90% done with my hellcat and was just today staring at my tank and clunk before installing. I'm running a gas engine and it seems like the line itself is too rigid and won't fall easilly to the top of the tank when inverted. I'm poking around for a solution as well. I'm also back-and-forth on a felt lined cluck of just the standard weighted.
I will send an update if I figure something out.
Keep me posted as well!
Thanks