the "toggle bombdoors" command works only for the pilot.But it seems only as long you were not in the bombardier position ?!?!?
the command "open bombdoor" and "close bombdoor" works for pilot AND bombardier.
the best is , ALWAYS use the "open" and "close" command......anyway, lets hope in a far future we will need this command in the Blenheim not anymore. Because the real bombdoors were automaticly opened by the bomb's weight
and thx for the hint about the "release bomb" shortcut blackdog. I didnt was aware of that change in one of the patches (or forgott it because of the low flying time).
Now have to test if it also works for the german bombers.