Marc,
Don't be discouraged. Those ambiguous posts get alot of looks and probably answers, but most of the answers are from guessers who don't have a clue, but just try to be helpful. Trust me the professionals out there don't waste their time on posts that don't peak their interest. There is nothing more annoying than a post that says something like my car idles rough. The post doesn't even indicate ir it is a Mercedes. Hang in there buddy.