how much movement should there be when the steering yoke is turned or raised and how much difference in speed should there be when you shift from low to high?...mine doesn't seem to do much of anything
Your speed should just about double when you go into "high". You can't turn real sharp, but you should be able to target most things that are anywhere near the center of the screen.
I might be able to make a video of it later, when I have some time.