In addition to the 'transpose' setting I mentioned above (entire keyboard transposition), you can also go to the 'mixing console' page and go to the 'right side' of the 'tune page'.

Here you can raise/lower each SPECIFIC part you choose (Left, Layer, Main) up/down two octaves (total 4 octave range). This should certainly allow you to correct any collision problems you are having. If this doesn't work, I think you better get 'collision insurance coverage'.