The events surrounding the standard in the 1990's are fairly complex. The standard was rewritten and went to AKC for approval. The Board approved it and when it went to the Delegate body they said, "Whoa." I forget all the issues that were raised but the lawsuit played into the situation plus there was a very suspect vote on the standard by the LRC membership. The LRC was then required by the Board to withdraw their standard as presented and to re-accomplish the vote. When the standard was finely adopted, there was some disconnect about the height that sent all the conformation judges to the wicket for about 6 months. Maybe it was the minimum height? Dunno.
There was also some question on coloration that would have affected yellows. Here I'll say it was a long time and 5 mini-strokes ago but I think the issue related to words to the effect that Labs had to be a solid color and judges were questioning whether darker ears and patches on the elbow and hock joints had to be that way. If so, a lot of yellows would be toast.
I don't know all of the ins and outs but there was a period that really had the conformation folks in a tizzy. As I said, George often said that they should just have two varieties ... the Labrador Retriever and the American Field Retriever ... and be done with it. I also know the story about the setting of the height to be what he said though I maybe confusing then 1994 version for the earlier version.
And that's about all I can contribute.