On Aug 1st I received a letter from Chesapeake stating that they were now going to take post-production costs out of my royalty check (I live in TX). When I called to tell them that there was an addendum to my contract that prohibiting this, the customer service rep. said that there was a 1997 court case that allowed them to do this despite the addendum. Their attorneys had gone through every contract and mine was one that fell into this category. They are sending me a copy of this court case. Has anyone else encountered this situation? If so, what are you doing about it.