[Alex T.]

Great idea. I'm not criticing the work done so far, but to me the tumbling of the tanks does not look right. Do we have any RL footage to compare?

there's a very famous video of mustangs dropping their drop tanks and they tumble away, the reason simply being that they have no stabilizing fins on the back. Same happened with napalm tanks until the introduction of streamlined and fin fitted ones, for more accurate bombing (but we're talking about Vietnam era).
Here's an example of the Vietnam era ones before they introduced the version with fins
have a look from 0.51
http://www.youtube.com/watch?v=IOrnShOifeI