I've been reading about the TBF Avenger, and as always, was fascinated to see some of the quirks of the aircraft. Because of very high stick forces (among other factors that weren't clearly described), unless the plane is trimmed for a specific airspeed, it was impossible to perform even some basic maneuvers. Even pulling out of a dive requires adjustment to trim. This is why modern TBFs require a type specific rating, to learn how to use the trim system.
But then again, after seeing one in real life flying next to a B-25, and seeing just how huge it was for a single engine plane, I can understand. Does anyone know of a larger single engine prop plane than the TBF? The only one I can think of is that huge Russian biplane (AN-2 I think). Some of the frankenstein variants of the A-1 with the 4 person cockpit might come close.