I was able to complete the project, and found the video helpful.. I did find some missing info from the video:
1. You need a 20lb torque driver or be prepared to" work around" it with pliers and wrench.
2. There is a flange at the base of the threaded water inlets, sheikh requires a hard push to the right to unseat the old unit., allowing for its removal.
3. on reverse installation you will need to pull to the left to seat the unit to allow the screws to align