Started vaping when I got my Go-Go April 8th and loving it since I've lost all desire to even have an analog since that time. It's really been a happy side effect since I still have a full pack sitting on my desk that simply goes ignored (aww shucks). Having said that - I do have some questions when it comes to the cartomizers:
1. How do you
know when a carto is empty? Usually I just refill them at night and it hasn't been much of an issue. However, I did pick up a couple of pre-filled cartos (RY4) which since I didn't buy additional RY4 juice - obviously cannot refill. Also I'm getting to the point where I'm running down on some of the sample bottles of juice I bought and basically am trying to just finish off the carto before moving on. I don't want to damage (burn) the filler by overdoing it but at the same time want to utilize as much of the juice that already in there.
2. When I do decide to refill with another juice flavor - would I best be served by cleaning the carto first? I've tried cleaning a couple of them with mixed success - one of which simply refuses to vape anything after leaving it to air dry for 2+ days - hmmm. What I'm thinking - is that if the carto is still vaping normally and I refill it with another flavor - will the new flavor simply transition in or will I end up with something totally different and therefore not really give me a good bead on that new flavor?
Bottom filling - why does the consensus *seem* to be that it's a bad idea with Go-Go carts. I'm talking about either condom filling (which I've tried on a few and it seems to have worked just fine) or bottom filling a drop at a time from the battery end (which also seems to work). Am I limiting the life-span on the carto?
Filling a brand new carto. Okay - think I have that down. Most of the juice I've tried in a new carto seems to take about 85-95 drops using the drip and spin from the top - and then the tell-tale drop out of the bottom telling me I'm done. Once filled - should they sit for any length of time before vaping?
Speaking of which - once filled - how long will a carto still be good? I usually put a condom on the battery end and keep them laying down when not in use (and btw-6 fit
perfectly in an empty Altoids tin). Would it be a good / bad / indifferent idea to fill a couple with juices I want to try and let them sit for a few days before diving in?
My intention is to narrow down what juices I like to maybe a rotation of 3-4 juices and just have a couple of cartos in rotation. However, the sample packs from Velvet Vapors have been quite good and as a noobie - there's so much to try - I'm not sure what I'll end up liking the best

And damn if Kat over at Velvet Vapors doesn't keep throwing in an extra sample (or two!). I've already found that I *really* like her Orange Spice Tobacco flavor - but when I reorded a bigger bottle, I just had to order another 5 pack sample (where two additional ones showed up).
I think I've rambled on a bit - so I'll stop for now. FWIW, I have read through all of the Go-Go threads (and then some) - but there is a bit of information overload (not a bad thing - but stuff does begin to blur a touch) so my apologies in advance if any of this is readily available already.
Thanks everybody and Keep on Vaping
-Dave