I'm not sure if I'm being dumb or just not used to buying the cheap wires or if it's one of those autozone things or what. But whenever I've bought wires before they clip right on and its good. These wires (duralast I think) only clip on with one side. The other side goes on but is way loose and doesnt really lock in place like it should. Am I supposed to bend them so it locks on the plug or what?