My compliments to Randy Acosta at the S. Congress location, who trouble shot a problem on my 2007 Audi A4 Quattro, solved a problem, and saved me about a thousand dollars. Through online research and by calling the Audi dealership and talking to their technician, he was able to conclude that a dashboard warning light and an annoying audio alarm were caused by a faulty sensor. The wrong windshield had been installed and lacked the imbedded gell pad that's required to replace the faulty sensor for the windshield wipers. For slightly more than a $200.00 in diagnostics, I discovered that, under my car insurance policy, the company that installed the wrong windshield is liable for replacing it and putting in a new sensor. What cost me slightly more than $200.00 for diagnostics at McSpadden's I expect to have the insurance company pay the more than $1,250.00 it will cost to replace the windshield and sensor. Steve Munro, South Austin.