Of course pilots had engine troubles while they were flying. You've simply created an even more realistic model then you would have had with two identical engines. Your work looks great by the way. You've crammed quite a bit of "stuff" into those engine bulkheads, but it all looks very neat...not messy or sloppy at all. You obviously spent some time planning this well.
And not to be nosy, but those drawers in the background don't by any chance store some future projects of the planes that are pictured on them do they? I would love to see what you can do with a B-24, and there happens to be what looks like a B-24 drawing in the background.