I have a problem with my FiST--I can't hear the damn turn signal "clicker". I'm an old fart (55), and the frequency seems to fall right in the weak spot of my hearing range. Thus, when I'm driving I'm always leaving the turn signal on, making me seem like an even older fart! Any suggestions? Would that sound symposer block off I see discussed help by cutting back some of the other noises, allowing me to hear the turn signal better?