The current group of scientists at Miles City seems to do better than many in the past as far as selecting away from problems. There have been experiments there where their selections were made by gate cutting, just to check whether all the data collection and selection is really accomplishing anything. The basic selection goal has been to maximize yearling growth and often times problems have been overlooked. I know they are scoring udders up there now. So, the info is available to buyers and I think 850413 was a pretty good uddered cow.
I think I remember looking through the Schafer's dispersion catalog and the udders on the daughters of the 4140 bull weren't impressive.