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It requires better frame manufacturing processes, better wrenching and a small increase in the degree of user care than those commonly available. But then again it's fitted on high performance racing bikes - I believe the (flawed) assumption is that with the right manufacturing you'd hope that the wrenches involved and the users of the product would be able to step up.
BB30 itself is great - light, stiff, low Q factor. Even Tester approved.
It just doesn't recognise the reality of the pond in which it swims :)
lol at the user error comments, bb30 sucks just admit it ;-)
#swearinginthechurch