To make a long story short, i took my truck to Dorian of Powerstroke Engenuities last week resigned to the fact that I had head problems. I was ready to leave the truck there and drop some bucks yet again on the truck. I explained to Dorian the symptoms and he agreed that it sounded like a gasket problem, but he wanted to drive the truck first. We had already come to a very fair price and made arrangements for me to leave the truck with him. But he insisted on driving the truck. We did a couple of test drives and he determined that my problem was that my degas cap was not venting properly at 16 psi. He told me to get a new cap and sent me on my way. He worked with me for an hour but refused to take any money. He was very honest and straightforward an saved me megabucks. He could have very easily taken advantage of the situation but he didnt. Very impressed with him and his business. Hats off to Dorian and PSE!!!