I just received my first order of bobas and rafilicious as well as some other ave juices to try out. I've had mostly pg juice so far and after only a day on those my cartos seem to lose their crisp clean taste and start to give me this wierd very unpleasant sindged tingling feeling in my mouth/ throat. It's has been at this point I usually chunk them and start a new one. I keep them topped off and was under the impression that they would be good for around 5 refills... But that's not happening. Sound familiar? Am I doing wrong? And on a side note, i hear the vg is worse on your cartos... So what's the best setup to use for them that will last the longest? Cant keep going thru a carto a day! tank, cartos, or atty and cart? (Currently only have a basic 510 manual with ce2's)