I have conducted the test where I point the nose in the air (while on the ground) at full throttle. I haven't noticed any change in pitch.

I should also point out that I can hover several times, for up to a minute each, with no problems from the engine... no surging, hesitating, etc. I was wondering if the engine may be overheating. It is ventilated good for air flow over the fins, but I thought that the increased load on the engine (from hovering), and the fact that the only airflow it is getting is from the prop, might cause overheating???

I know that a 14x4w is at the high end of the prop envelope. But, I was thinking that since a 13x6 is in the recommended range from Magnum, that to reduce pitch by 2, would allow me to get away with a 1" increase in prop diameter. Anyone disagree?