Zeke,
My point was really that until 1988 RTO performance was as laid down by the manufacturer. Until the accident no one gave it a second thought.
I was at Lockheed when the original RTO performance was tested and I dont know if they went back and did it all with complete sets of worn brakes or just did an analysis.
The allowable brake wear was reduced to allow for all brakes worn less so maybe they just made the brakes comply with the aircraft and not the aircraft comply with the worn brakes ( if you get my meaning !!)
Going back even further A BEA Airspeed Amabassador went off the end due to slush freezing on the landing gear. This hadn't really been considered before and another point which was added to the factors!!
Despite all the testing, factoring, analysis and evaluation it takes an incident to bring it home !