So basically how much cotton i use i just estimate if can pull left and right when its in the coil then i align my scissors along the outer threads and cut it, then put on the bottom chimney, use a small screw driver and gently push the cotton down to the juice channels. Not sure if im doing it right or wrong but after trying this method instead of just agah agah last time , it significantly reduced the amount of spitting and leaking. But the thing is that the flavour is not so strong.
The only thing we can do is experiment haha