have you tried changing your wicking method

if ur using RBA, the cotton is blocking the juice channel. You hhave to keep the path clear. Rip trippers has video guide on that

here you go green fingering  monster

https://www.youtube.com/watch?v=T8rO6PoMgU4

another thing, if ur using high VG juice, less cotton.

if ur using High PG juice, more cotton.

okay. RECOIL THE OCC!!!

thats the only thing i can suggest now

its pretty easy 

rba and occ performance is difference.

the reason people use rba to save money not to spend on occ.

buuttt, you can actually recoil the occ as well.  You can take off the coil through the bottom. clean it. use 26g coil and make 4-5 wraps and put cotton from the middle holes. tadaaa..

https://www.youtube.com/watch?v=RCqNcKZAZjM

Vmog? What's that? Haha

erm when u first time get subtank, u can feel the difference using occ/rba.

yup, the RBA is a bit more restricted

i dont really see it that way actually. For me OCC can deliver more taste better than the RBA. One thing i dont like the design of the kangertech RBA is how the spitting occurs. You have to cover the top part with something like the atlantis occ "thing" or idk what you call it to remove the spitting.

On high VG i can get my RBA working just fine, but for thin juice high PG the chamber gets flooded like mad cow and spitting occurs
Them flippers. How to make money.