Yeah, I agree, love the taste of the carts too. I know John from Intellicig has said it is a special blend of their own so I doubt the secret will be revealed. I also top up the carts when they start to dry out but it's never the same. One thing I do remember though is I'm sure John said a while back that they plan to sell the liquid separately at some point. When though is a whole other question. Looking at their website they appear busy enough with the products they currently are trying to sell. No point in asking either as they rightly seem to keep things well guarded when it comes to new releases. I don't think John will go
through the harassment he no doubt had when he tipped his hand that a black Evo was coming - then we all had to wait what seemed like an eternity.
What I have found does work to prolong the flavour is topping the cart up before it's dry, as the original flavour is quite strong if the liquid you use isn't strong this seems to work quite well.