Couplers lock up and won’t close.

Rob Briney
 

I have been using Sergent Couplers for several years now. From time to time I will have one that refuses to close. If I take it and turn it upside down it will open just fine. I will usually take it off soak it in Acetone   then clean and examine it before reassembling it. Sometimes the cleaning doesn’t work and sometimes it does. I have had a few that this has happened to right after  removing them from the assembly fixture.

Does anyone know what causes this? 

Rob Briney 

 

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