Should work now, had to change privacy settings.
Pretty consistent +5 to 8 fps...
I have a sneaking suspicion that it is
Had to use my wife's Facebook to open the link, but the video still doesn't work for me.
What's your consistency over the chrono?
Tried the following a few minutes ago:
1. Checked for a bushing in the rail... it is present.
2. Pushing on back