Ocean, great idea! Another thing that improves these matters is to take stepson aside and offer him a private conversation, always open door, always a good ear - without giving advice unless he asks. If you say, "I'm always here to listen to you when you have something on your mind. I won't tell you what I think unless you ask. If you have something you can't talk to me about, I will find someone for you. I won't judge you or share your secrets, unless there's a danger to you." This helps the kids know we're not the enemy, but a support system for all the difficulties they face. Another thing to do is to let them off the "blame hook" by telling them that we know they don't mean to make things difficult, but that's the result of their lack of cooperation. Tell him you can put your heads together to improve things, that the rules are for the betterment of the family as a whole and for the individuals, and that chores make us important, contributing members of a family.