Ok guys I think Im off my high horse now. I apologize. Its getting so bad that now I can only laugh at all of this Ok the latest is he still insists this timing chain is causing the low speed miss and jumping. Keep in mind this is a certified MB mechanic at an MB dealership. He says now that one of the guides has fallen into the pan or engine or whatnot and he wants me to pay him $3000.00 to remove it, bringing the cost of replacing the timing chain to $5000.00. Can someone please make sense of this. I told him all of your suggestions about what was causing the car to jump and he sad"well I disagree"