Niterider, the priming process is only needed when installing a brand new cartomizer. I usually get 20 to 30ml through a cartomizer before changing it. on refills it should still be plenty wet as long as you have not been
vaping it dry as in the tank emptied and you kept on using it. This can happen say if you are caught out. Depending on the cartomizer it could have a ml or more of liquid in it so you can vape it for quite awhile after the tank appears empty. I dont recommend this of course since the key to longevity of a cartomizer is keeping it saturated but will do it in a pinch.
You can drop the tank into the thingy and fiddle a bit any time though as long as the carto isnt trying to flood. There have been times when one just did not seem to wicking as fast as I was
vaping, I call this running lean and the thingy is handy to pump it back up. You will be able to tell which way it is running as you get used to using a carto tank. It is best to make adjustments to find the balance that works for you using voltage and draw style. Higher voltage will atomize liquid with less time on the fire button as will a long slow draw, the long slow draw will also pull less liquid into the tank so this is the direction you want to go if running too wet. If running too dry lower voltage and a harder short draw will pull in more liquid and not vaporize quite as much.
There are so many variables like cartomizer resistance, liquid viscosity, temperature ect that it is impossible to tell someone just how to use a cartomizer tank but once you have the basics and an understanding of how to make the adjustments most settle right in to a combination that works for them.
Its ironic that we like carto tanks because they are about the most fiddle free form of vaping providing the most consistent vape week in and week out yet we openly promote fiddlin with your thingy

Guess its all about priorities
