....... Handle turned but remain closed as other half remained in closed position. This is the second time this has occurred.....
John
Clearly this is a design fault with the handle system, so has anyone determined exactly what goes wrong, which part of the system it is that allows the handle to turn but leave "half remained in closed position," and more importantly how to modify the design to prevent this from happening?
Odds are that there may be something you particularly need to use at that moment when the handle chooses not to cooperate, and which may result in an embarrassing or dangerous situation as a result.