Big investment - getting frustrated.

[Shadowcat]

Like others have posted, we need to know more info to really tell you anything.

That being said, do make sure you are drinking enough water and make sure you are inhaling properly

http://www.e-cigarette-forum.com/forum/ecf-library/337017-inhalation-technique-e-cigarette.html

I totally agree with you. Plus the fact that you may be encountering dry hits which can be really painful, imho.

 

[Porksmuggler]

Biggest mistakes for me starting:

Inhaling directly like a cig
Too low ohms, start in the middle 2-2.4 on a 3.7V
Too high nic, around 12mg is best for me
The big one, PG was a no go for me, 100%VG is all I can vape. Roof of mouth swelling, sore throat, neck rash, etc.