Had the driver side quarter glass get shattered by a rock on my S4 Avant recently. After checking at a couple of local glass places, it became evident it was going to be expensive and tough to find a replacement. Got a used piece of glass from a salvage yard and am having a hard time finding anyone to install it. I do most of my own car maintenance but am clueless when it comes to installing glass. Anyone out there that can walk me through the steps in replacing a fixed piece of glass?