Another good set of posts. However, I feel I must give some credence to Boeing's designers and techniques:
"The only indication as to which way to assemble it was a small faint arrow less than 1cm in length etched lightly onto the bearing."
You have to bear in mind that "Bearings" (such as SKF or Timken) are very seldom made for a single purpose and can be individually purchased and used in a plethora of devices - such as an Aft Xmsn or a Power Station Generator. Designers will almost always use commerciall y available items that they dont have to make. And Bearings have most often been designed to match a specification, e.g. for Axial Thrust - not just to fit in a specific gearbox.
So; to etch a preferred orientation is not an easy task and can only be done for the purpose for which it has be procured - not designed. Also, the depth of etching can ruin the Bearing Race's structural integrity.
A dirty great crevice in a Race is not a desired effect - and those of us who were aware of the tiny markings knew exactly what to look for as we built and repaired the Rotorheads, Swashplates, Drive Shafts and Control Rods & Levers.
As for the official "Unofficial" forums (or is it the unofficial "Official" Forums) that won't entertain posts of misdeeds in their Baileywick- that's exactly what Denial is!