Unless you had a written, binding agreement regarding the specific issue's you mentioned, it'd be not wise to express expensive unhappiness through an atty's letter. "I said" / "He said" is of no real worth. We all buy these things as is. I bought my 69 220d knowing that the guy was lying if he was speaking. I factored that in and told him what I'd give him for it. He said, "Yes", I'd already dispensed with his lie's and am dealing with the car's problems one by one. And have had a lot of satisfaction is learning the in's and out's of this car and solving problems and doing the work myself. I think in the long term you would not be happy with yourself if you did some global smear of the guy's name on this site. Just use PM's when you see people dealing with him and tell them to beware. My best wishes. To me, I guess everybody on this forum has one commonality: We all like to turn junk into something pretty and useful and fun.