Yea, this is a problem if you are using only the keyboard to look up/back-left, for example. The F10 won't save a new position for some planes if two keys are pressed on the number keypad at the same time. What I do is press a button on my joystick that set for look up and press one (and only one) of the keys on the keypad. I then adjust my view and hit F10 to save the new position. This seems to work for all the F4U's.