So I just installed a Steeda passenger side motor mount. I get a noticeable vibration at idle, like the exhaust is touching the chassis even though I know it is not. The vibration is not that noticeable at cruising speed. It also seems like the car is louder. I am using the softer of the two bushings Steeda provides. Is this normal. Just curious to see if this is how it feels with a correct install.