If you still have the original Krazy Horse supplied rod end bearings they will probably be worn by 15,000 anyway, if you chose to leave them in place that long. The loading/geometry is well within the operating range for these bearings in good condition I am told. It's the condition of them that will change with mileage, that's the bit we need to keep an eye on. The Aurora XM-6 bearing should not have broken. I suspect this may just be an issue with these Aurora bearings, I won't be using them again.
Plucking a figure out of the sky I intend checking my newly installed NMB ARHT6E(R) rod end bearings after two years or 10,000 miles. I may NDT check them and refit if there are no fault indications or wear.
With hindsight I should have removed the Aurora bearings and inspected them at some point earlier but there was no reason to suspect there was a problem. There was little or no wear in the bearing itself and only very minor surface corrosion. The crack was only just above the locknut and not in a visible area.