I have a '99 accord ex with 9006 low beams. I recently replaced them with Sylvannia Silverstars. They lasted about 6 months and then both died within a week of each other. I convinced Autozone that they should give me two more for free, plus another one for free as a spare. After putting them in, I noticed that the right side looks more yellow then the left. I took the spare and put that one in and got the same results. After looking closely, I found that there is what looks like a smudge or discoloration on the reflector. Now there is no way I could have put that there because I can't even stick anything in there to wipe it. Has anyone seen this before? Also, to get to the reflector, would I have to bake my headlights?

Thanks for the help!