Thanks Inge. That's what I figured, I've got a couple of weeks off soon and will be tearing into the drivetrain, to perform Dr. Ducks splinetology. The previous owner made no mention of having done it, and I went to the shop where he had his last service done and asked them if they normally perform spline lube at any service intervals and they said that was considered an extra service that had to be requested, so that means mine has probably never been lubed since the factory.