Our sense of smell is closely tied to memory.The model a isnt a generic computer designed product of a marketers dream,it smells of oil and gas.To me the smell of old 600w is a model a.Got a little crankcase vapor? let it flow,look at it this way,in the eyes of the state you are a gross polluter when you drive your car whether you control your crankcase vapor or not,embrace that,fight the system..