Looked it over. A few things:
In your tank folders you have a sound named Thread, needs changed to Tread.
M8 gun uses 37mmman, not tankgun.
If you are using the same sound for all your a/c, such as your gear.wav sound, just put it one time in your main Sounds folder, making it a global sound. You don't need to repeat the same .wavs in every a/c or GV folder. You only do that when you have a different sound for a particular a/c or GV, as it will override the global one. Putting the same weapon, gear, etc. sounds in every folder is an unnecessary boost in file size.
Will look it over more later. It's interesting Bravo, I'll give ya that.