Not sure who David is referring to, I don't remember anyone claiming to be an "expert", I too would heed to George's suggestions if I owned this turbine. That said, I was merely pointing out an observation. I don't personally own this turbine (this could be normal, I suppose), but what I can say is that none of my turbines puff smoke like this or can you visibly see flames in a gap between the can and the cone. Gases appear to be escaping, which could pose a danger if installed in a model. That obviously goes without saying. Re-play it back slowly, you'll see what I mean.