I got my Boge carto's today. I filled them, let them sit awhile like I have seen suggested. But after using it for about 10-12 drags it is crackling like it's dry, I popped the cap off and the filler all looks dry. I am pretty sure that I loaded it enough. I probably got at least 25-30 drops in it which seems like it's enough to me. Any tips, secrets would be greatly appreciated.