Is it acceptable to have asymmetry 6 months after breast reduction?

When preforming a breast reduction, how much asymmetry is acceptable and considered minor? When does it become a more severe degree of asymmetry that you consider unacceptable? When patients are told there is a risk of asymmetry after having a breast reduction, to what degree of asymmetry would be considered acceptable to a board certified plastic surgeon? If the patient is 6months post-op, and has 1 breast 2inches wider at the breast base then the other, would that be minor asymmetry to you?