Just got new one off Calivaper's classifieds. Did my first build and had the coil using a single strand 3mm Eckowool / 30g Kanthal 2/3 wrap sit perpendicular to the screws but right on top of the center air hole which seemed to make the draw too tight. I did another one making sure the coil had enough space to not block the center air hole which made the draw better. Also after watching Todd's You tube video I had the ends of the wick sit on top of the channels making sure not to pack the wick into the top of channel openings and just to have them sit there. I guess I'm used to rda's airier draw. Also I notice the flavor wasn't as pronounced as a rda. My first build was a single coil @ .5ohms, the 2nd one read at .9ohms. I also thought the thinner channel on the included drop tip contributed to the tight draw so I put on a wide mouth drip tip which seems to help.
Can anyone give me some insight to this?
I've experimented with these things a lot. Although I haven't tried a single 3mm wick yet. I have been planning to. I just haven't got around to it yet. I've done several configurations of 2mm silica and ekowool wicks, including the Figure 8, the S or Bow Tie, etc. While I have made some acceptable builds with all of the above, my conclusion is this: The best build, IMO, is the micro coil/cotton set up. I almost hate to say it; because I have lots of silica and ekowool around. But the truth is, for me, the cotton build is superior. Plus, once the coil is built properly, it will last for many wick changes. Just pull out the cotton, when you need to change wicks, clean up the coil, if necessary, and pull a new piece of cotton through.
As for the tips, I've found that I like a larger bore tip than the stock KfL tip. Actually, my current favorites are the old "barrel" tips, that used to come with the first DID alikes.