I am currently getting a Fisher hide ready to tan. I have the pelt in a pickle. I am going to pull it today and do some final fleshing. When I'm doing this I have two questions. First how wet or dry should I have the pelt before working it. And there is a thin membrane that is extremely hard to get off. Do I need to get all of this off or am I good to leave it as long as my pickle penetrates fully? All the fat and meat is removed.