I thought I should teach myself how to hand prop my O375. (8.5 to 1 compression ratio with left hand mag being impulse) All worked well. After stopping by leaning, she consistently starts on the left mag only on the 4th blade after being primed with one pump on the throttle. Without priming it starts on blade 5.
Am I risking back fire by priming with the throttle?
Also I know you are supposed to start with a flat palm on the back of the blade. But no way can I get enough grip without a little bit of finger over trailing edge. To the first knuckle. I felt better with a leather glove on. Is this because of the size of the engine or is this pretty normal for all planes?