The driver side is always the one that breaks first, it isn't design to resist lifting over time, it is better at compression resistance. I replaced mine with OEM Mercedes from Rob and haven't had a problem since.

A steel cable is good to use until the new one comes in. If you take the cable off after it is replaced you will know the next time it breaks. I have an exhaust leak that I can start to hear now though.

We could all use a top SC mounted torque link or a third OEM mount. It would need to be on the driver side somewhere with the bottom of the OEM mount bracket attached to the engine and the top of the OEM mount bracket attached to the wheel well/braced to frame. This would compress the mount like the passenger side instead of trying to lift/stretch it.