OK, so I just received my iTaste MVP with Kanger pro tank 2. I'm already loving this.
I put the Kanger pro tank on and could definitely notice the difference between that and the iClear. I took the pro tank off to refill and tightened the base too tight, when I put it back on the iTaste it wouldn't fire up. I tried to take the base off the Kanger pro tank and it was too tight I couldn't even take it off. It won't work now, I think I might have tightened it too much and damaged it. Looks like I'm going to have to replace it.
The iClear is working fine, still gives me good hits, but not as good as the Kanger pro tank.
Now the iClear tank had a plastic piece inside the tank that connected to the coil, I'm not supposed to remove that right?
Also, how often will I have to replace parts in the iCLear tank, and which parts? Same question for the Kanger Pro Tank.
Oh, and what are the differences between the VV and VW settings? Should I be messing with those?

~sounds like you screwed the protank 'to tight' onto the MVP
which pushed the MVP battery connection farther inside, now not able to touch
and you ALSO tightened the base too much INTO the protank ??
only thing that needs to be TIGHT TIGHT, is the coil into the base
all the rest just 'snug' up...
~that silicone 'piece' on top of the wicks on the i30 is the seal for the mouthpiece/tank
and needs to be there--when you screw the mouthpiece in, notice how it 'seats' on it...
~
when should you scratch your nose? when do you get a drink? when do you eat?
when do you change coils?--same answer for all ; YOU JUST KNOW
the performance starts dropping off, and you know somethings wrong...
you then replace coil / renew coil / or rebuild coil (all depends on HOW YOU vape)
~the VV / VW are the settings you adjust to get different power output to your coil in the tank
not a giant difference between the two so suggest until you get more familiar with using MVP
to just focus on the "V" (looks like U) ALWAYS start low (3.3) test vape and see how it works
then if needed increase V 3.4-3.5, see how it vapes, repeat, etc.
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Adapter - 510 Battery to eGo Cartomizer
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http://www.discountvapers.com/innokin-iclear-30-dual-coil-replacement-coil-head-5-pack/
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ProTank Coil Heads