4L60E Teardown: Harsh 1-2 Shift and No 3rd or 4th Gear Shortly After Rebuild

I tear down a transmission that was previously built and subsequently repaired shortly after but with the conditions (harsh 1-2 shift) unresolved. While the previous builder/shop substantially upgraded the unit, he set up the 3-4 clutch incorrectly resulting in failure. Note that this video is abnormally long; this is due to wanting to show the customer everything the previous builder did and didn't do w/the transmission.