Hi all, My first post here. I have just bought a 2004 C5 I 2.2 HDi Auto Excl. Against good sense I bought it without having any workshop manuals, so I'm asking for help. I have read all the threads here and though removing the front valance is mentioned a few times, I can't follow a few things. I can't see how to release the extending piston (of the headlamp washers) from the little plastic covers that sit on the bumper. (Well I can see a few ways, but I'd prefer not to break anything, yet :) ). Do I have to get a narrow flat screwdriver to bend down the flat tab (that extends backward) from the cover? It sure looks ready to snap off. Any advice very desperately accepted. Thanks, Ed