maybe you moved an insulator something. You can get the whole deck apart if you want to figure it out!!Thank you, @Zutankhamun Swapped pin from another K5 and it fired fine. Weird: Put original pin back in, and now it works. I had tried taking the pin out and replacing previously with no luck. 
Thanks- the cure seems to be to keep the sides of the wick away from the air hole.@magicmyst
Okay, don't like my authentic so never use it but been doing some reading.
1) enough wick to just touch the deck
2) make sure juice flow is shut when filling
3) open juice flow less (enough to avoid dry hits but not any more)
4) replace all the orings on the bottom half of the atty (sometimes too thin I've heard)
5) don't repeatedly fiddle with the airflow slots mid vape. Find a setting you like and keep it there.
Admittedly this is too much p**sing about for an atty which costs £100. I don't like it neway. Overrated, overpriced, average.
[Duh.]
. It worked all fine and dandy for 3 weeks but now i always have to double check if the atom gets detected and if it does i have to change the watts every time the readings get crazy....
Why did you leave the pin loose?Hey there
I dont really know how to formulate this, but i seem to have an issue with an original kayfun 5. I dont really know how to formulate because its a strange thing. Its a couple of weeks now that the k5 or the mod that it is on ( rx 2/3 from wismec) behave strangely. two weeks ago it all started with the mod giving me atomizer short messages. At first i didnt notice it that much, changing the coil and rewicking did the job. But then i started noticing strange readings of the resistance. For exemple, now i have a 0.7 kanthal a1 resistance and the mod reads 1.2 sometimes 2.3, other times 1.8 or 0.5 but mostly "No atomizer found". I thought it was a contact failure of the mod itself, so i tested it with the goon 24 and had perfect readings every single time. I tried with the griffin and the siren 22 and had perfect readings every time. I tried putting the k5 on the pico squeeze ( iknow its a bf mod but it worked fine with not bf atoms) and its really wobbely and doesnt fire at all. On the kanger Topbox mini it fires but it wobbled like a biatch. I tried to tighten the pin and to leave it a little bit loose, but still have problems.
I can't figure it out whats going on
It was not really "loose". Just a slight unscrew. I Wanted to See if by giving 1/2 mm it would have done a better contact.
The screw needs to be really tight. Also how are you trapping the leads? You need to go around the backside of screw with wire for a good contact.
I tightened all of them up real good before first use, so it doesn't seem to be the tightness. The only other difference is that I lubed the replacement rings with olive oil. The 2 that I did this to have been bone dry on their bottoms since May/June of 2016.
Got a new K5 recently and all three got new wicks Wednesday evening. Nearly identical coils/wicks in each. All were bone dry through Thursday. Yesterday the new one (which was the most heavily used) had just an insignificant little bit of juice at one of the vents. By today, again the new one had just a little blot of juice and the other two were doing their usual seeping, including the one that had very little use. This seems to suggest is that it's not usage related. The most heavily used K5 had very little seepage after 2.5 days of use, whereas the one that was used very little was seeping big time after just sitting there most of the time. I'm gonna replace the top cap ring on the heavy seeper and see if that makes a difference. There's plenty of wick in the wells and the coils are at least 1.5mm above the air hole.
