The DC-3 is modelled to rock, it is what everyone is trying to tell you. FSX is a "Flight Simulator," published by Microsoft and considered one of the best in the world, certainly cutting edge for it's time. Released in 2008, it has grown far beyond the expectations of it's original publisher and indeed enjoys new life, well into the 21st century. In the context of that environment, here you come 10 years later with an intention to "fix" the DC-3. To do so, within the constraints of "simulation," would be to discard the DC-3 for it's real world replacement, or, re-examine the DC-3 as modelled, to learn why it remains so popular, despite its shortcomings.
I apologize for being vague, but I believe you misinterpreted my previous post. When you come here and ask questions, it is not our role to end your search for you. It is our role to suggest ideas and relate experiences that help you - and others, understand your search, so that you can complete it. I think it helps to remember that the joy is in the discovery, we should never try to steal that. If you ask a question about aileron control and I turn around and type your words into Google, I am not using my years of experience with similar situations to help, I am being a librarian, further, I risk insulting you, by implying you cannot do the same for yourself.