Hi KEG
The simplest thing to do, albeit a temporary solution, is to press the up arrow key a couple of times when you've gone back to the 'default' internal cockpit view, from say an external view.
This is what I do each time and it's easier than the alternative, that being to change some settings in the Plane Maker app. This will give you the permanent viewpoint change that you're looking for however!
If you would like more information on this, please get back to me and I will try to explain in more detail.
Regards