I ordered a set of pre-painted body side moldings from Chevy parts and assumed they were going to be a double sticky tape attachment. When I received the moldings, I was surprised to find posts on the back side in addition to the double sided tape as if they were designed to fit into holes. There is no way I am drilling holes in the doors to mount these. Would clipping off the plastic posts and just using the tape work OK or would they eventually come loose? I don't use automatic car washes so no concern there. Most cars I've bought had the trim already attached at the factory. For some reason it wasn't an orderable option on the '09 that I am aware of. Even more strange that dealer installed parts wouldn't just be a stick on affair. For $185 the set, I don't want to needlessly ruin these.