Shamus, I really don't know how to go about doing that.  I have uninstalled and reinstalled AHII.  No luck.  
Like I said, the other sound settings remain where I set them, except for the primary and secondary weapons.  I opened the sound settings with note-pad, and that said the sounds were at .5.  That is correct, because that is were I adjusted them to, 50%.
   I don't know, just kinda' frustrating to have to reset the sounds every sortie.
Coogan