I have been using SRAM Power links for years and a 10 speed KMC chain with their missing link fine for months. I have a new KMC 7-speed chain that I wanted to shorten, but I cannot get this missing link apart. It is a CL-571 that looks like this.
This usually takes me 5-10 seconds to do. Tonight, I've been at it for an hour. I've used 3 different types of needle nose pliers to squeeze the side plates together and no dice. I've looked through previous posts about this and have tried many suggestions (though I didn't quite get someone's suggestion of "making a triangle").
Any suggestions or other tricks to try?