@Oregon Linda - I have two KF Minis, a 3.1ES, and a Lite (all clones from FT) I can get a couple good tanks off the 3.1, but I'll be DING-DANGed if I can get the others to play consistently - especially the Minis. I REALLY want to play with them, but I'm thinking my bane is my high-VG juice. I DIY, and it's "max" VG (only PG is from flavorings), so I just don't think they wick well. I've even tried them on my Cloupor Mini+ in TC mode, and that isn't helping. Love my PT2s and my Nautis. Have a handful of STM and STN tanks too. I'm finding love with my Velocities, so really, I have plenty of vape goodies. I guess I'll just keep plugging along, and as I get motivated, I'll try another build....
Next time I mix, I should flip my PG/VG ratio - my nic is VG, so I should break out straight PG to mix with my flavors.... I dunno....
On mine, contrary to the KFL lite V2 I have found that BIG open (2.5mm on mini and 3mm on V2) coils and lots of cotton solve the problem.....I gave up the mini's and went straight to V2's but had 2 of them going on 90/10 juice. leave the chimney unscrewed about 2 turns if you can.....and I used to prime them when I picked them up. On some of the clones the channels weren't quite deep enough and 10 minutes with a dremel tool will fix that.(be carefull)
one is bad enough... 

