Not to jump in here and bad mouth any manufacturer but I have a Jetcat p120 that i bought and it just fired right up with no problems. This is a turbine that the warranty expired many years after the initial purchase. I had it in it's original box and i am so happy I bought that brand. Will always be a Jetcat guy, I would send it back and get your issues resolved. This whole ramp up speed is just nonsense. I could get my Jetcat modified to the new std and i won't do it.