I was watching numerous YouTubes of WW2 action and noted several gun camera shots in which Fw-190s with drop tanks took damage to include the drop tank flaming.
The modeling should be a small percentage shot in which the drop tank will burn and then the 190 driver has roughly 3-5 secs to drop the tank or the whole bird goes up in flames. If they drop it in time there is an awesome pyrotechnic effect as the burning drop tank becomes a roman candle arching to the ground. Maybe a 5-8 second burn time.
boo