Purchased my Smok R80 kit as my first mod, wife has had a Kangertech subox mini and now she has a Smok X Cube Mini using an Aspire tank on it with zero issues. Anyways, I purchased the R80 kit and it came with two coils, the clapton and then the .25 micro dual core used for Temp Control. Everything has been well and I actually messed up the Clapton coil pretty quick by messing around doing this or that and actually dropped it one night and the coil broke but no other damage to the mod(I hate the charging port being on the bottom, I was sitting on the edge of my dresser to charger and it eventually got me and dropped it and it broke the coil but not the glass, weird I know whatever). Anyways, primed the other coil that came with the kit, and set the temp control to 420*(I've never smoked and never like it "hot" because I never smoked and I use 0 nicotine e-juices). I usually use it to help with sweet tooth cravings and it's a relative cheap hobby that me and the wife share(she actually uses nicotine with hers because she actually did smoke before). Anyways, I liked the .25 Stainless dual core coils used for temp control so I ran back by the vapor store and picked up a pack of 5 coils for the future. My problem is the following: I prime the coil(I did install the extension on the micro tank so it's the 3.5ml capacity now instead of the 2.5 as it comes from the factory) anyways, I prime the coil and let it sit for 10-15 minutes after I put the juice in and then do 3-5 dry pulls with the air holes closed to make sure it's got ejuice in the coil and is primed really well. The first tank of juice is perfect, some of the best flavor I've ever gotten from the multiple mods I've tried. It all goes to hell when I use all the juice up and I go to refill the tank, it's like no matter what I do I get nothing but dry hits. I've tried temp control and Wattage mode with the same results, in temp control I do 420-440F and wattage I'll do 30-40 watts depending on the juice I'm using. Has anyone had any experiences similar to this? I don't see how it does so well with a new coil and the first 3.5ml of juice but after it's like it needs a new coil everytime the tank gets low. This is impossible to afford really, I don't mind if the coil will last a week but one day, no way. I was thinking about trying the TFV4 mini or fullsize to see if I have better luck. I've noticed the micro coils will wick really good with the first tank but after I fill it back up it's like the juice doesn't wick into the coil at all and it's really frustrating. It's gotten to the point I'm about to give up and just let her do it and me give it up since it's 0 nicotine anyways but I like it as a hobby we both can share and some of the e-juices taste amazingly good. Everything on the mod is setup correctly, I've watched reviews and the guys can kit them at 60-80watts and act like they give great flavor but if I go over 40 I get a dry hit that feels like a flame thrower in your throat. I've let multiple people look at it just to make sure I"m not missing something obvious. I think I'm going to go buy a couple of the micro claptons and use it in wattage mode and see how that goes. Has anyone had any issues similar to this or have any ideas on things to try? I've ran the numbers and both the mod and coils are authentic so it's not fake stuff I'm dealing with. Just really frustrated and wanting to get it going the way it should be, if it takes buying a new tank to fix it so be it because I will, I just don't want to waste the 40-50$ plus coils and end up with the same results. Thanks and sorry for the lengthy post but I was trying to explain my situation as well as possible. Hopefully someone can help me shed some light on my issue. I don't want to give up after coming so far and loving my mod when working right just aggravated at the current situation. Thank you guys for any info/help/suggestions.