(sorry to hijack but I am still too new to start my own post)
Interesting situation you got there.
So, I think Vermont Vapor is all VG juice.
And the Johnson Creek juice is known for being a bit thin.
So with that in mind, see if this helps you figure out what is going on...
PG versus VG juices
PG is propylene glycol and VG is vegetable glycerin.
As far as differences go, this is what I have gathered from reading things here and there.
1) VG is thicker (more viscous)
2) VG vaporizes at a lower temperature
3) VG produces better vapor
4) VG is somewhat sweeter
Because of the above...
1) VG does not wick quite as well
2) VG may gunk up your atomizer more quickly
3) VG produces a somewhat cooler vapor which may reduce throat hit
And maybe this will help too...
Dry atomizers, flooded atomizers, and wicking
Basically, you want to keep your atomizer happy with plenty of juice, but not too much as to flood it.
A good sign that it's flooded is that it gets a little harder to draw on and you get little or no vapor.
Flooding it, however, won't hurt it at all, and you can just blow out the extra juice.
Letting it get too dry, on the other hand, is not good for the atomizer supposedly.
But regardless of whether it is bad for the atomizer or not, you still don't want to do it.
You can tell it is too dry when it starts to taste like crap.
A nasty sort of metallic burning taste.
One reason it might get too dry is if you burn through the juice faster than it can wick up more.
That is why people experiment with different kinds of filler materials to use in their cartridges.
If you take only a drag or two every now and then, you should be fine.
But if you use these like a cigarette, the wicking process will have trouble keeping up.
There are ways to deal with this, and people have different methods that work better for them.
And of course, when the cartridge is running low on juice, it needs topping off for this reason.
