Skrum, if it makes you feel any better I couldn't get #1/0 (or any candle wick mat.) to work without basically unweaving it with a pin
(my first and last time doing that 
)...my Vivi Nova is my stand-by, when everything else is acting up like a spoiled brat device...file out the slot to 3mm, get your self some CC from the grocery store, count up 35-40 threads, one pin wrap your coil and lay another small piece of that just on top of the coil and done...yet to have that fail...then vape on that till you can get some Aunt Lydia's #10...7 strands of well boiled Lydia and heaven....