heyas; nah, anthony; i've gotten best results with the mouth as closed as you can possibly make it (but not fully closed) while still having the teeth below the joint demarcation zone. but remember, i'm talking about long jaws, here, like the wolf/lion/etc. not human jaws. if you model the mouth wide open, then to close the mouth with jp's you will have too much polygon crunch. it's better to stretch the lips open then to try to crunch them closed.