I use 2mm cotton candle wick and 5 wraps. Gives about 1.8 ohms. I always put my new wicks in last thing and allow it to soak overnight. It definitely helps. I wrap the kanthal on a 3mm screw then thread the cotton through. Make sure when you fit it in the vivi the kanthal is not pulling down too tight on the wick or lifting either!!! Also (last thing!), if you unravel the wick up to the kanthal, it helps wicking. Learnt most of these tips from people off this forum and they have served me well so far! Takes practice, but worth it.