When I measured the thrust on mine, I had it on a decent test stand with well oiled rollers and a digital scale. I measured 9.8lbs from it. I didnt note what the temperature or humidity was as this should not have that dramatic of an effect on a turbine. It was with the one piece tail cone. I do believe that if the fuel injectors have a something to do with it...any others want to input on this?

Luis