just curious, if and for how much janty may sell its 10ml bottles empty. 

I have both the 510 and the JS... the vapor seems about the same to me, both excellent. What I do get from my JS that I get less of with the 510 is flavor. The flavor of the juices seem to come thru better on the JS than on the 510. That said I love them both equally, just depends on what mood I'm in as to which one I vape on. I think you'll love your JS.
I received mine this week. I use the white cart cap to screw mine in and out and it works great! I love the stick. It is fantastic.
Hi Chad, I just posted the following on another thread...
When putting an atomiser in use a screwing motion to the right, that gets you past the first obstacle of the gold band around the atomiser..
Then using a tight fitting cart, push down whilst still using the screwing action, this should cause a click when its in the right place, then continue to twist to right, making sure it isnt just the cart that is turning.
Press the button and listen... if you hear the hiss.. its connected ok.
Its something that is now second nature with the JS...lol
Just to add to this, you need to push and twist at the same time, once the atomiser reaches the connector, push that little bit harder it will then fit quite tightly..
Always raise it to your ear, push the button and listen... thats the best way to know its connected.
Always use a tight fitting cart to manipulate atomiser.. The one that came with the atomiser is usually the best as its a blank tight fitting cart.
Hope this helps..