I have my own home made cockpit which is supported by Prosim737, based on the default FSX 737.
What's the folder name of your airplane ? A way to "import" the default 737 configuration that comes with GSX, which is surely working, is as follows:
- Load the default 737, check that all the doors are assigned correctly. If not, use the "Reset" button in the Airplane configuration dialog to reset it to the default configuration that comes with GSX.
- With the default 737 still loaded, edit one of the doors with a minimal edit that is basically not visible, like raising/moving one door 1-2 cm. This will result in GSX creating a GSX.CFG file for the default 737 with all parameters COPIED from the default internal config.
- In Windows Explorer, go into the %APPDATA%\Virtuali\GSX\Airplanes\B737_800 folder, there will be a GSX.CFG file in it.
- Copy that file into your airplane folder, under the FSX\Simobjects\Airplane\MY737_NAME ( whatever is named ), so it stays together with the aircraft.cfg file.
- Load your 737 now, it should be configured just like the default from GSX now.