The rear/main engine mount at the firewell on Civic I have moves about 1 inch or more during throttling at idle with the hood open. The side one's move slightly. Is this normal engine mount/transmission mount operation? I get a 'clunk like' feel at times on the highway when I shift gears(feels like the engine is rocking for a moment?) or when I come off of the accelerator, it happens at times then, too.