In my experience the bend pad actually takes a much lighter touch and is more of a sliding across the top motion, rather than pressing in and tilting the button.
And it always helps to check the editor to see what the presets are doing. For some reason we decided to set the "min" and "max" for the pitch bend modline to different values each preset (though I think we changed this in the most recent, 1.1.1, update), so each preset will have a different bend range.
You can also adjust the "Bend Range" parameter in the editor to give you a smaller or larger bend range.
2, 3, 5, 13, 89, 233, 1597, 28657, 514229, 433494437, 2971215073