The post by Peter Mahler under the link below discusses a recent case that addresses serious mistakes in a corporate shareholder buy-sell agreement.  The same mistakes can readily be made in LLC operating agreements.

Here’s the link:

https://www.nybusinessdivorce.com/2020/04/articles/arbitration-and-mediation/buy-sell-agreements-are-supposed-to-deter-litigation-not-foment-it/