Sound's like centric ring's to me too. Like the person from the Silvia forum said, He discussed there may be a issue, there is, and he is trying to fix it. I find it a bit weird that he want's to come and pick the car up, allthough he may just be trying to offer a bit of customer service. I say give the guy a break. As for the insurance side of thing's, your car will be covered by HIS policy, so there's nothing to worry about. As a mechanic, somtime's a over prtective customer can be a real pain and get in the way of diagnosing a problem. Give him a chance to right his wrong I say?