I've noticed over the past few years, the HifiMAN factory cables are getting cheaper. Instead of using good quality connectors, they are having the cables mass produced and the connectors are molded onto the cables themselves. The strain relief that they provide is short lived. If you can get your hands on some shrink-tube, I'd put some of that on over the current strain relief pieces, then heat it a bit with a hair drying to tighten things up. This will provide a longer life for your cables.
Best of luck,
I'll most likely have to do it to the replacement cable. Sadly it's gotten to the point where the cable itself is damaged, causing an imbalance. Heck, everything I've bought recently has had abysmal strain relief. Must be a trend. Thanks for the tip