I found this (
http://www.youtube.com/watch?v=j7Z6XIMV948) video too and I'm not sure if it is the video that the gentleman in the one above refers to, but it's pretty good too. One thing I took from it that I never thought of is to fill the carts with loosely 'spun' batting. I opened up one of my unused empty carts and noticed that the batting was kind of densely packed in. So, I broke it apart and 'spun' it into a loose cylinder and I ended up using half of what had come with the cart. I got better draws on that cart and had greater flavor!