I finally broke down and purchased an HO scale GG1 with the "Sound Value" installed. Other than blower, compressor, horn and bell (all function controller), the loco makes NO SOUND at all while running! Is this correct? I know GG1's were quiet, but the electric motors make NO SOUND AT ALL? While running, it seems I have a "no sound" loco...? Also, from the Soundtraxx site, this thing has settings for "automatic bell and grade crossing" AND "exhaust sounds". I can't seem to make any of that happen. No matter how I set the CV, there are no exhaust sounds, and no way to trigger the grade crossing signals....am I missing something?