Problem solved.....have you ever heard of a harmonic balancer named "The Rattler"? I guess some genius came up with this theory that it would somehow help the harmonics through the crankshaft???....over my head. Anyway.....it is a SFI approved balancer, and the builder used it, because it is the only one he had, at the time. The strange thing is.....to listen to the noise, you would be convinced it is coming from the oil pan. That balancer is headed to the trash can.