in the cessna 208B you have to find the knob, you may have to make the right yoke disappear, its the leftmost knob
uploaded a screenshot, didn't appreciate having to resize though, no one likes ultra wide apparently :)
Have you ever figured this out? I hadn't used FSX inn like over a decade and now wanting to get back into it … I want to fly the max 8 and at best I get a white plane with no paint or texture.... is there a simple article that explains where the files and folders should be placed exactly?