Ok, taking on board everything that has been suggested and advised so far, ive done 6 different builds on the Taifun and Kayfun in the last 2 days, all different builds, from micro coils and cotton, to normal coils and silica/eko/cotton yarn - each and everyone either not working, done the most simple setups, to the more shall we say complex ones (navynest) muted flavours, not wicking, over wicking, no vapour and throat ripping horrible tastes and in the case of the GT leaking from the 510 connection and the airhole.
So ive gone back to my drippers for the meantime - this is the part i dont get, ive got 3 drippers, igo-l and w and an AGi (which is horrible to build on) they all run microcoils 2mm with .32 kanthal, 8-10 wraps anywhere around 1.3 to 1.6ohm generally, and they all taste perfect, well apart from when i get the cotton wrong obviously - my kayfun used to work fine, i could coil it and wick it no issues, then all of a sudden its like ive lost that part of my brain.