Is it me, but I find it very strange that the missile lock tone is so faint! I simply cannot hear it, it is totally overshadowed by the cockpit noises and much, much more silent than the normal missile tone.
I there a mod with increased volume somewhere? Could be my age, after a while you can hear lower tones better than higher ones, but honestly, this one is inaudible.
I now shoot when I *don't* hear a tone anymore, but before you realize you loose some vital seconds!