I can see why you're so frustrated and don't blame you in the least. In my state there is a way through family court where you can go in and get child support amount determined without filing for LS or D. Anything like that available for you?
I have to say that from all the sitches I've read your H's rollercoaster has some of the steepest twists and turns. You are handling things remarkably well for what you have to put up with.
They all seem to be batschitt crazy, just some more than others.
