Hi Blair, in this video Adam explains the process around 13 minutes 35 seconds
https://www.youtube.com/watch?v=aKSe3XZvwkQ
Basically the two lists have do be identical, they can have as many or as little logo3_wrapper and logo3 images as you want, i created one list and then duplicated it, thats it, then you just need to make sure in the grid you match the same amount of fixed width column's in the grid component for 1 of the 2 lists, along with that you need to total the width amount of each column's plus the column's gap between each div to get the total value to add to the animation. hopefully the video explains it better than i do 馃檪