I am getting a noticeable metallic tinging noise coming from the vehicle right at 3,000 rpm (nowhere else). Normally I'd go right to a heat shield or something with the exhaust but it feels solid and nothing seems loose. Before I spend some time chasing this noise with the muffler shop, could this be my CVT or something with the engine (cam chain guides)? I know CVTs are noisy but this is new and it always sounded like something external. Car has 110k miles on it and wasn't sure if this is a common issue with these. Couldn't find anything repetitive in the search function.