There are 6 cams, 2 shims and 8 screws in this universal kit. If you have 6 cams left, what did you install last year?
Because this kit designed for a few different types of door hinges, you had to choose one which will match what ever is in the door of your refrigerator. The major difference is between the upper cams - one with a cylinder which goes inside the door and another one without a such cylinder.
This kit comes with the installation instructions