Posted 9/30/2016 09:27 (#5556639 - in reply to #5556601) Subject: RE: people your discussing 2 different locks here.
Ohio
I do on mine, otherwise the adaptor sags way down to bottom of travel and makes hard to unhook or hookup. Only way I know this is I forget to lock these sometimes, It still works, but easier for me if I remember to be locked up.