RE: hpi firestorm
or your getting too much fuel, if you harpin on it for a bit, pull the glow plug and check it, if that isnt the case richen it a tad, also make sure all of your bolts are tight, I have heard of a few peoples engine bolts being loose. Plus the video I posted if you notice I have to bring my throttle trim up a tad just to get it started then I can drop it.
hopefully that will help a little bit, Oh and if it is flooding then lean it out a small bit