Whiteside:
I get the same sound.ini error message from time to time, switching between different model versions back and forth, usually for development reasons. The result is a distortion in the sound effects. Usually switching slowly between different views and giving the sim a few seconds to get settled and than reloading a different model fixes the issue, meaning the model will be loaded without the error message. In some cases restarting the sim also helps.
I have no idea what actually causes this message, because the mentioned file is not present in any mod version I got. In the panel.cfg gauge17 is referencing the respective sound.ini:
//SOUND
gauge17=dsd_fsx_xml_sound!Sound, 2,2,2,2, \Sounds\Sounds.ini
Moreover, I do not understand why sometimes everything works ok, and sometimes this message pops up. Maybe something is getting messed up during the load of the sound gauge?
Kea:
Concerning the visual glitches you posted, I have marked the positions where you can find the fixes in the screen shots. One word of advice, I found out that the margin of error for painting the exhaust feathers is very small. If you extend the black area around the feathers too far, they will show under the the airbrake cover. On the other hand, if you paint too much into the exhaust feathers, they will show the paint, as in your case.
Hope this is of some help, Peter