JTroiano, I know that what I suggested is not well accepted by most folks, but I used to be a technician at a Ford dealer and saw how bad dealers really screw over most folks, even those with mild modifications. I personally did not mind working on bombed vehicles as the owners of these vehicles took better care of them than the average person would. But if the service manager or shop foreman ever found out that I was doing warranty work on a bombed vehicle, they would try to void the warranty nationwide for that particular VIN #.
It doesn't matter which Dodge dealer does the warranty work, they all get paid by DC to do the work. The dealers are just a franchise that have to conform to warranty guidlines to get reimbursed from mother DC for any warranty repairs. Dealers that try to weasel out of warranty work probably don't have a competent diesel tech on their staff to begin with. I am sure that if you try my recomendation at a dealer with a competent diesel tech, they wil probably come to the conclusion that the oil pressure relief valve was indeed the probable cause for your failure and warranty your engine as it should have been done in the first place.
I am not in the business of screwing over people for my own gain, but when I see someone getting screwed over, then the only way to get justice without a lawyer is to play the game like they do until you get the upper hand. Remember, it doesn't matter which dealer does the warranty work, they get paid by DC to do it. The end result would be that you have your truck fixed rightfully under warranty, and no one is out any money except DC for covering the warranty.
Good luck!