[Bo_Nidle]

i had the same experience with the latest version of the sound mod. I too went back to the earlier 9.0 version and added my own version of the 2800 in. There is quite a few sources on the net for good sound files and a program called Goldwave made it possible to adjust the files until I was satisfied that the planes with the 2800 sounded like they should.

Once you get the hang of modifying the sound files to the appropriate form its preety easy to create the sounds you want.