I really don't know man, sorry. I'm still pretty new at making coils and wicks myself.
I find it pretty easy to do with the cotton I'm using though, have you ever tried Native Wicks? It comes in a roll and all the fibers are in one direction pretty much like a thick fluffy cotton string. I just cut of the length and thickness I need & don't fluf it up or anything, just wet one end with a drop of VG & roll it to a point a bit and then stuff it through the coil as far as possible without distorting it and then carefully pull the rest through with ceramic tweezers. With a 3mm coil stuffed to the brim and sitting low to the deck I have enough in there to fill the two juice holes without leaving gaps.
My juice is really thick too though, that must help.
I've been wicking my subtank mini rba without problems since september, but wicking this rta just doesn't work for me without leaking.
Haven't tried native wicks. Should try it if nothing else works.
I only have muji at home (just received a package of 189pcs). My first muji wick on the bachelor worked amazing, i could vape with the jfc open all the way with 60/40 VG.
I'm currently trying a new approach:
1. Raised the coil a bit to increase the distance between the wick and the small holes in the deck just to make sure there is zero contact.
2. Instead of rolling and fluffing the cotton i just cut a strip, removed the outer layers, made one end pointy and wicked the coil.
Just had to wipe of a little juice ring on my mod, but that could be some old leftover juice stuck in the afc ring since the last build.
I'll report back if this works.