Hey there, I have a 2012 Mazda 3 skyactiv, the engine vibrates above 2000rpm and I can’t figure out why. It’s a 6speed manual. Just sitting with the parking brake up in neutral if you rev it up over 2000rpm you can feel a vibration starting. I’ve replaced all motor mounts and it’s still doing it. Anyone have any suggestions for me that would be awesome. Thanks.