Rob... this concerns the 9006 - 9005 conversion. I just installed the sylvania "Cool Blues" to see if they were any different. What I noticed: There was a dramatic addition of a center pencil beam if I tilted the bulb down (lifted up on the bulb base). Has anyone commented about this before?.. This seemed unusual to me. Does it suggest that my bulb housings have somehow gotten distorted? Adjusting the entire headlight would not have made such a great difference. For now I have piece of thick plastic stuck between the bulb base and the headlight housing. Any thoughts greatly appreciated! tia