VapoKing...Burning

i realize it's a cheap vaporizer($90u.s.), but having it on even 330degrees F and taking 3 rips or so off it it seems to burn the stuff pretty good. like the things only good for one really good hit. any explanation for this, or is this how the VapoKing works?

you have it waay too hot then. turn it down alll the way and start from the lowest heat setting and try taking rips. if you cant, turn it up slightly and repeat the process until you start getting steady rips. mark it on the dial for future reference.