I have had this engine (evolution 46) on 3 planes, it's about 1 year old. It purrs like a kitten, I think it's finally broke in. Never had a problem going to full throttle (before the 90 degree heat and humidity) now there is noticeable hesitation from idle to full throttle. I tried adjusting the needles to no avail. Is there such a thing as to hot to fly?