1st I used 1mm but it was rubbish, just way to thin to do the job. 2mm is much better, plus I've done an extra loop of wick for the 3rd hole. Next one I'm going to split the main wick to put in the 3rd hole, mainly to spread the wick and also it will look neater. My only slight gripe is the hole for the drip tip is a little wide so I have to use my cheaper Ming until I get some better orings.
Im really glad I got wick in advance, I don't much like the look of the stuff that came with it, it's very fluffy and has loads of loose fibres. The stuff I got from Germany is very tidy looking. Just hope my provari comes quickly cos the other lavatube still hasn't come and my old one is mucking about badly!