Is this an extract kit? If so what kind of extract did you use? Also, was it all extract or did you steep some grains as well?
I found on a couple early batches that the extracts I used already contained some specialty grains. Then steeping more specialty grains it seemed to have too many. There was never an issue with a gusher, and if I drank from the bottle it was amazing. If I poured to a glass, there was a very thick head that would hold up the bottle cap and didn't go away. It was roughly half beer and half foam no matter how carefully I poured.
Then again maybe I don't know what I'm talking about. I'm pretty new.