I was thinking of a way to improve the rotary effects for my Numa Compact 2x. Instead of shelling out $500 for a rotary pedal like the Neo Ventilator II for a $699 keyboard, I decided to try out the IK Multimedia Leslie® plug-in. Suzuki/Hammond must have let IK Multimedia in on the secret recipe. Very realistic. I ran both my NC2x and organ VSTs through it. They all sounded great. I've read some posts by pro Hammond players. They all swear by it.

https://www.youtube.com/watch?v=P7kB_PKJYBo

https://www.youtube.com/watch?v=lesj5oA5Ae8