It did work. Reliable compared with some other aircraft...no, but it did work.
So...whats your point?
and by work..It flew, it dropped bombs, it shot at enemy fighters, it crashed some, it prolly shot something down...etc...uhh what are you looking for here?
...or are you just defending a point because you made it? Might be an unpopular aircraft from their crew standpoint, but...HEY we dont have that problem! So again whats your point?