any diesel mechanic can work on a dura...its all in how well you trust people...personally i hate dealers too...the guy i have do the work to my fleet is a 21 year old guy that works at an auto shop here in my town, he went to wyotech for diesel mechanics and he charges 20 an hour and i buy the parts. i have had 0 issues with him...he's done about everything on my trucks. thats way better than the 70+ an hour dealer shop rates are. try talking to one of the mechanics at the dealer....see if they'd be willing to do your stuff on the side or on weekends....thats what i did.