The best way I've found to fill ressurectors is to gently place a toothpick in the center hole just enough to keep
juice from going in there. Then just drop in a little at a time. You can actually put more than usual in there because the hole is "safe". It soaks in pretty fast. Just do this in chunks until it drops out the battery end/can't hold anymore. It makes it so much quicker than holding it at a 45 degree angle, gently dripping a few drops at a time, etc... You can dump about 6 or 7 drops at a time, and it evenly soaks in because the covered center hole makes the liquid pool up entirely, surrounding it. It then just slowly soaks perfectly in, little by little. It works flawlessly. I'm actually surprised this isn't a well known filling technique.
Now, if you're trying to use 100% vg filling a boge carto, this probably wouldn't work, because the thick liquid would just sit there and not soak into the very dense filler.
But most liquids seem to be mostly/all/or at least half pg, and the smoktech filler isn't as dense, so this technique works well.