That looks nice. Not my method, but looks quite effective.
People lose patience with this tank, but once you get it dialed in then it performs 2nd to none.
I use the "R2" dual coil RTA (sold separately), cut the wicks short like in the video, but prejuice a little and form the wicks lying atop the channels with a just a little bit of wicking lying in the channel.
(This pic is from last week's build.
Re-wicked today and trimmed wicks even slightly shorter than this.)
Vaping like a freight train, No dry hits, no leaks, and ample juice to the coils.
Again, the method shown in the video looks good. I posted the pic because people are always asking about wicking this tank, and what's shown in the pic has worked very well for me.
If anyone else has pics of what's working well for them on wicking the TFV4 then do share, please.
Cheers