I'm still stuck on the muffler shop and am waitin, with baited breath, to watch for your solution- TO THE OTHER thousand fans, chillers, motors, whirring parts i would hear... while peacefully counting sheep, from the muffled intake/exhaust fans. my "private, contemplation zone", is near the gear. i didn't even get through the fingers of my first hand, counting all the other random, generally jet engined, irritant sources, from that area, i could identify- that went beyond the MUFFLER's range of expertise. tell me about it- life with a half empty glass, can be convoluted. but i know when the last sounds from that area are ever heard- it's because I'll have been watchin whatcha did, next.