Denny, I don't have any answers for you, but for what it is worth you have my sympathy. Last year I changed a couple of things on my 52. For the next 3 months I couldn't get it to run. I was so frustrated I thought about selling the truck. For two weeks I didn't even look under the hood. I read hundreds of pages here on several componets. After the time off I redid a couple of things and now she runs. She still has a habit of coughing at 40 mph or so that I haven't corrected, but at least I can drive her. So hang in there you will figure it out.