Hello Michael,
I am not a facebook member so I could not view your video. I know that many forums do not allow video uploads since they can quickly use up allocated memory resources for a board. A link to a video is the normal procedure in most forums. From what you describe though a video probably is not needed.
Dead beat escapements are very sensitive to power fluctuations and losses. This is likely what your movement is experiencing.
Unfortunately there are many factors that result in power loss that might be involved here.
Did you install bushings?
How is the finish on all pivots? If a dead beat then polishing the pivots is very important.
Any bent pivots?
Are all escape teeth perfect? No bent or damaged tips?
Any wear on the pallets?
If you can you put a couple of images up here of the movement and a closeup view of the escapement?
Best Ian