It does that for you guys because the wheel is set to 360 in windows, so when it asks you to put the wheel 90 degrees to the left, it goes all the way to 360 even though you only have 280 on the wheel.
What you could do is,
a) Put it to 280 in windows (I don't remember if that is possible with MOMO but should be since logitech?)
b) When it ask's you to put it 90 degrees to the left - put the wheel in the position where the value on that screen says 280 and lock it there, don't worry about putting it exactly to 90°. That should give you a more accurate wheel responsiveness.