Is there a way to smooth the amount of vibration distributed from the motor to the cab when at idle? My truck performs and idles great but I am bothered at times by how much the cab rattles on the inside at idle. Sometimes it feel much more than it should be. Ya know the shakes inside that you feel sitting at rest waiting for the light to turn green. The engine is a fairly new 350(30,000+ miles) I'm just curious if the feel of idle in a fuel injected engine can be reached with a carburated engine.