Agree squeeze the RCA outer shell fingers a bit..
Many types use a set of split fingers to grip the Female chassis RCA. Some chassis RCA are bigger than others. The bigger ones bend out the fingers, then, when you use that cord on a normal one, it can be loose.
Many types use a set of split fingers to grip the Female chassis RCA. Some chassis RCA are bigger than others. The bigger ones bend out the fingers, then, when you use that cord on a normal one, it can be loose.

