I am still a noob to vaping, and even newer to 3 piece units, so maybe I don't know what I'm talking about, but this is what I have found with the ego-t so far. I blow it out at least once a day, and prime with either PG or diluted VG (no nic, unflavored). I also find that mine need a rinse, or short soak in hot water every day too. But after 4 or 5 days, the coil is just too gunked up, and it really doesn't work very well any more. At that point, only a dry burn will get it working again properly. If you remove the plate with the spike, the wick comes with it, so a dry burn is possible without burning the wick. (Is the stuff that the coil is wrapped around also a wick?) I have read numerous times that dry burns will shorten the life of the atomizer, and I'd rather not do that, but nothing else I have tried gets the gunk off the coil. It is entirely possible that my troubles could have been avoided if I had known to blow it out and give it a rinse regularly, when I first got it, but I didn't. I have also found that no matter how diligent I am about blowing it out, rinsing, soaking, etc, the wick doesn't really get clean. It does get pretty clean once it has been removed and rinsed, but not without pulling the spike plate out and rinsing it all by itself. Every single time I have removed it, it has been brown and icky (no matter what color of juice I'm using), and it always wicks better for me after I have rinsed that off.
I have a love/hate relationship with this thing. When it is working well, I LOVE it. The vapor is sufficient, the TH is just right for me, and the flavor is so clean in comparison to cartos, even brand new cartos. BUT, it isn't always working well. And when I am having to mess with it all the time to try to get it working properly again, I really miss the simplicity of my kr8.