Bad News: I'll stick with Busardo, Todd, Nick and those fellas for reviews.
There are videos about priming these heads. You don't need to let them sit. That's not really priming. Try the Nhaler site.
So I'm testing the VCV as we speak. So far, it's actually gurgling a bit (after some heafty primer puffs and some dripping, I wasn't skimpy on it) but not leaking. I don't mind gurgling though as long as it tastes right. The taste conclusion? This is a mystery. The caramel swirl, if I'm right, is a salty-caramel blend. It smells absolutely wonderful, like real, authentic caramel, but the taste, in the Aspire, is pure salt. I'm not getting burnt, and I'm not getting oily (I don't think - it's hard to pinpoint with the salt... there are fishy aspects...) but pure salt. I'm turning the voltage up tiny notch by tiny notch, still in the process. My taste buds may now be immune to oil and tar on this Aspire, so who knows, maybe something's there, maybe something's not. It just tastes like salt.
What I will say is geez, the vapor on this thing. I wish to god that this thing packed the right flavor, because the vapor is pretty darn unreal. At 0nic and VG, there's no throat hit, but geez, just the vapor coming out of this thing is wow. So I know it's wicking somewhat well, at least. Maybe this tank does need a thicker juice to work right. I'm seeing a few more air bubbles than what I previously got. Just again, pure salt. I'm slowly dialing up the voltage to see if the caramel aspect of the juice just isn't heating up enough.
DISCLAIMER: Hold up, I'm wrong, the website says nothing about this being a salted caramel mix, nor does any review. THE ASPILE IS GOING OUT THE WINDOW. HOW A TANK SYSTEM CAN MAKE A JUICE TASTE LIKE PURE SEA SALT IS BEYOND ME. THIS IS GARBAGE. It turned my rum into fish oil too. I haven't ate any fish or any single thing salty lately, btw.
Wow. I'm sorry, but IMO you really need to learn a lot more about vaping and about how to review something GoodNews. You've already got some great advice in this thread. Hope it all works out for you!