Back years ago porter mfg in Lubbock tx build the " wedge wick"
The pvc tank was pressurized and it had metering needles( guess that's the term) on the ropes
The ropes made a V to wipe the JG
It worked pretty good
They don't make them anymore but it shouldn't be too tough to build one similar
Here is the only picture I could find
porter wedge wick