Exposé: key-bindings & slow motion

Everybody knows about the slow motion effect that you can have, while using Exposé when you press the Shift key.

(link 1, link 2, link 3, link 4, link 5, link 6)

One thing I noticed, since I have remapped the keyboard shortcuts for using Exposé to the far more handy F1, F2, and F3 keys, is that if you want to use the slow motion trick, it simply doesn't work with the new keyboard shortcuts, also, it doesn't work with the 'Active Screen Corners'.
That is, the trick only works when use Exposé with the default key-bindings and press Shift, I believe those key-bindings might be hardcoded somwhere onto the program?