Guys, Picked up a bass and guy said it had a Custom Shop 60s P Pup in it. It sounds a bit different from the other Am Stds i've had that have those PUPs in it. Is there a way (serial number series or identifying marks) that can help me identify whether or not it is actually a CS60 PUP? Not the end of the world if it isn't but I just want to be able to verify whether it is a different pickup or maybe a set up issue. Thanks in advance.