I have to say that when I teach 30 degree turns the following happens everytimein a 300. Set 20" mp,60 kts, roll into the turn, by about 45 degrees into turn nose will start to drop. Add .5" mp the nose will come back to 60 kt attitude and the ac will go round and round in circles at a constant height and speed all day. Tried this in loads of different conditions always the same so seems to show that wind does not make a difference