1. The second video is set as Private. 
2. The current version of U4K has some settings for the curve on your pedals. Does changing that help at all?
3. If you open up your FCB again and (carefully) unscrew the little board underneath one of the pedals, you can check if the LED is at all crooked and nudge back into place - this is a known problem with some new FCBs. See the last couple of pictures here: http://el34world.com/Misc/Music/FCB_1.htm
2. The current version of U4K has some settings for the curve on your pedals. Does changing that help at all?
3. If you open up your FCB again and (carefully) unscrew the little board underneath one of the pedals, you can check if the LED is at all crooked and nudge back into place - this is a known problem with some new FCBs. See the last couple of pictures here: http://el34world.com/Misc/Music/FCB_1.htm
This is very good advice.
I would do (in this order)
1. re- calibration
2. check curve settings
3. check internal pedal LED and sensor.
Then I think you should look for the LED.
Cool!
