I just bought a new 06 Miata Mx-5 one week ago. I love the way it handles and its' head-turning looks. There is one thing that REALLY bothers me though. When I am in 6th gear driving at about 60 mph it feels like I need to shift into 7th gear(which of course doesn't exist!) At 60 mph it's doing 3000 rpm on the tach. Is this normal? It is aproblem with the transmission? engine? I would really appreciate an answer either way. Thanks!