Ok guys I have the solution to your Kanger leaking/gurgling problems. This is what I did.....
If you take the top off, you will see the grooves underneath the top where it is supposed to screw in. In some devices there is an o ring placed in the top groove. Mine did not have one! So I got one from my local vape store and put it there myself. The actual problem is with air leaking into the chamber. If you put an o ring there, you will have no more problems! There is a video about this.. here is the link
you're welcome.