Hello again. I would be grateful for advice. My 280CE is very weak starting. If I put my foot down before its warm it bogs and stalls. When it's warm, it runs stronger but I also suspect its running rich. When I decelerate there's a strong smell of gas. I've changed the cold start valve and tried to locate the auxiliary air valve so far without success. I've also had a look at the warm-up regulator. From what I've read it sounds like this device is the culprit .... what do you guys think???