Here are my eGo-T tips and tricks:
1 - Never use a juice with more than 30% VG
2 - Stay away from Darker juices (They'll work, but you'll have to clean your atty every other day)
3 - Clean your atty at LEAST once a week, I prefer the soda bottle method -
Here.
4 - Make sure your wick is in the right position. If your first 3-4 hard primer puffs (without pressing the button) don't give you a nice vape, use a paperclip to push the wick down inside the needle about 1mm, do this very gently or you can damage your atty.
5 - Make sure your tank is FULLY seated, there should be NO gap between the cone and edge of the tank.
6 - After inserting the tank, rotate the tank inside the atty at least 45 degrees, some people spin it around a few times. The final orientation of the tank in the atomizer doesn't really matter.
All of these have become part of the routine, and I have no problems with my unit at all.
On a side note, you should also check to see if you have the v1 or v2 atomizer. The v1 had a blunt needle inside, and is slightly thinner than the v2. The v2 has the pointed needle and is thicker, for better wicking. V1 atomizers have been known to have issues.