I would consider still taking it to Bob4x4, he's a long time member here, works at McPeek at Taft/Ball @ 57 freeway and knows a ton of everything about the CTD.
Freedom-Diesel.com in Hemet /
Mike at Carli Suspension on Batavia in Orange is also super good at that, but I'm not sure their working on the fixing truck stuff everyday versus creating badass suspensions daily. Might give Jesse a call at Carli and inquire.