roll up ptb like a tube then insert it into the broither mod tube, the ptb part can sit in the tank but the brother tube is long enough to sit in and out the tank as well, plus it has a slit in the middle so the ptb will always be soaked. this way not only the the coil but the wick can be serviced and changed as well(for a test mod) or those thick braided wics might be good.
im getting ahead of myself but all these possibilities are truly exciting, whenever a group of people are able to change something like this I get really happy, innovation makes me smile.
heres my theory, the e2's coil get scrunched together coupled with gunk it makes it harder for juice to pass through it, the gunk builds up and even if that area is wet you can take a drag and get a funky taste, so if its dry inside the gunk or if its the gunk burning thats what we are tasting, you can tilt and wet it more or pull through it and as it heats the juice will flow through it but you can still get a slight hint of the taste of gunk.
breaking it up with a needle helps a little to dislodge the gunk but it will build up again unless you dry burn it.
i think the case of this is the coils being to close to gether and they eventually bunch up and with gunk it becomes tight and packed in the one area , so whatever design is made the coil loops cant bunch up together.