Too much slip

[RC-Monster Mike]

Also, you did mention the grease in the video - you are using the AE grease to grease the threads on the diff cup/adjustment ring, correct? You do have a large, heavy truck, so I expect the need for a tight setting, but you should be able to make full adjustment if the threads are greased well(meaning you should be able to completely flatten the springs against the slipper assembly).