I have been a machinist for several years now, and I cant see getting the play in the bearings to a tolerance of 5 tenths, and by the way, is this +/- .0005, or is the total tolerance .0005, meaning +/- .00025? If you can move the rotor out .0005, then you could also bring it back to zero, and push it in another .0005, making your total play as .001. Besides, I write programs for, and setup machines to manufacture rollers for aircraft bearings, and the rollers themselves have +/- .0002, Just because you have .0005 play in the bearings, doesnt mean that this tolerance is the same on each roller.... Sorry for being so picky guys, but this is ridiculous. I go by feel, and always have. Half a thousandth of endplay is a higher tolerance than aircraft parts would need. I know Mercedes is a high quality car, but not aircraft grade.