new '09 stock altima s drives funny

[silverqfortyfive]

Since we got the car new i rides firm on good roads and

harsh on the rest. Are there springs that can fix this?

Also the gas pedal is real touchy taking off and the brakes are light

when first applied and heavy just before stopping causing the car to

jolt? Rented other Altimas and drove a friends Versa

they seemed fine I just don't get it. Followed the FSM and disabled the

EBD to test no change.

dealer replaced front pads and surfaced all rotors

didn't help .. and squeal returned in a week

24k mi now

Thanks!