I would hafta rate Jessup a far last on this list. He is supposed to be one of the designers of the B series. But he is more of an engineere than a mechanic. He knows how everything works, he just hasnt the best reputation on using all of that knowledge. I know of a few trucks that he couldnt fix that went elsewheres for a easy simple fix that he couldnt find.
I would goto the professional mechanics listed above, or here is a few more that can do it. Diesel Injection Service in Louisville, Steve Truax in Shelbyville, KY, or Black mountian Diesel in Nicholisville, KY, Van Haisley in Fairmount, Enterprise Enigne in Columbus, OH, Daves Diesels other shop in Angola, IN, Scheides other shop in Effingham, Ill. Is this enough? Indiana is a real good region for diesel preformance.