Please try cleaning your threads in the Chimney Mr. Knife. I think some use some sort of tiny gun cleaning brush. Just washing isn't good enough. I had some ornery coils that somehow worked perfectly and easily after I cleaned both the coil and chimney threads well, with luck. cloth and a q-tip -- I didn't have a gun brush.
Also, there was quite a bit of chat much earlier in the thread about the threads of the coils and how screwing them on and off a nauti could smooth out a rough spot and make the soft metal of the coil work more smoothly with the steel of the Kabuki.
Sorry, my technical vernacular sucks --- calling on
@ENAUD to help!