Hello. I have had a U-Bolt for several months now with no real issues.
Recently when the lock is locked electronically, if you try to unlock from the inside using the knob, it feels like you are fighting against the motor to unlock. It makes a sound like you are turning the motor mechanism. If you try to turn too quickly you can hear a click or snap.
If you try to lock and unlock manually it is fine, no resistance.
This would occur once and a while randomly over the months, but now, its pretty much every time.
I am thinking there must be some sort of clutch or catch that grabs when the motor locks electronically, then is supposed to release when finished, which is now not.