KangerTech®center pin is tight, it pretty much leaks when the tank gets lower.
Also is there somewhere you can buy parts for the subtank? O-rings etc.
Have you removed the glass from the top frame yet i do all of the tanks i set up when doing the first washing then lub or wet the orings with juice if the glass gets stuck it can cause the orings not to seal lose vacuum from the top and leak the glass needs to be able to move what pg vg are you usingI only see the 1 oring on the bottom of the rba where it screws into the base, nothing on the top piece that screws onto the rba.
Had the same problem till i tryed a juice from Blue Lab can go through 120 mils of juice before i recotton cotton still white but coil needs cleaning no spitting first hit in the morning blow light back in to tank after that good to go i still have a juice called cookie monster from another supplyer i really in joy re cotton every other day it gunks up quick but it taste so goodSorry can't help to much because mine doesn't leak at all... In fact I have never had a leak with whatever build that I throw at it.
Maybe check what Brian said... I had my center pin loose at the beginning but I've tightened it up at the first time I got it.
My problem is juice spitting back ... It is consistently spitting juice back at me with whatever build I throw at it. Tried the pre-made coil and it also spits back like hell... O that darn hot juice.
It helps if I fire it for 3-5 secs without sucking it... But after 5 puffs, hot juices back in my mouth...
As for dry hit, as long as I remain up to 25 watts at 0.5 build, it won't burn the cotton. After 2 days I will have to re wick... Cotton got blackened on the areas that touch the coil, coil got gunked and flavor became a bit mutter compared to fresh wick
WOWI really dislike the Kangartech sub ohm tank maxi and mini, no matter what juice you use the seals keep disintegrating Now the Kangartech Aerotank Mega View media item 428167 I have had no problems with and in my Smok Xpro M80 Plus it fires up well. Don't get concerned about occassional condensation on the outside Quite a few tanks I have do this just wipe it off.
I really dislike the Kangartech sub ohm tank maxi and mini, no matter what juice you use the seals keep disintegrating Now the Kangartech Aerotank Mega