Concentric,
Perhaps I was rude in that you feel I was addressing you in specific about blowing smoke. Not so, I respect the thoroughness and thoughtfulness of the posts from folks who apparently have the engineering background which I lack. Perhaps the planet gear was the point of catastrophic failure but consider that perhaps the initiator was the thud that may have happened when it fell off the truck. AB could not be expected to say "we think its good, just don't let the unit fall more than half a meter if you should drop it". My only point is that perhaps if they had thrown away the guts of this GB after the road accident, this never would have happened. If they did that my point is moot. They do the next best thing at the worst time (post catastrophe) and address what failed. Not saying there weren't serious design weaknesses, just suggesting that they might not have manifested themselves at this time and place if the truck didn't crash.