TrebleWithoutAPause, can you narrow it down for me about the Square Lead?
On the Subtractor patches, you have the following folders: Bass, Fx, Monosynths, Pads, Percussions, and Polysynths.
Is the square lead in any of the previous folders that I mentioned?
Inside the Reason's Subtractor patches folder, there is a Monosynths folder, Treble, that has the Mellow Triangle. In my opinion, the Mellow Triangle really sounds close to Lil' Jon's Whistle.
Maybe a couple of tweaks here and there will produce a good emulation of the Lil' Jon Whistle