I clipped the side of a city bus yesterday morning with my passenger mirror. Very narrow city street but still a total bozo move, I thought had plenty of space and then I hear WHAK! So the housing and motor are good, not even a scratch actually. The mirror glass has spider web cracks so it needs to be replaced. Just wondering if anyone here has replaced it yet and how does it come off and where is a good place to buy the glass. Thanks in advance.