I bought my truck at Peel. Not sure how the service department stacks up, worth a try.
Regarding the regen, I have had success manually riding the truck in a lower gear to do the regen around town. It's all about keeping the revs up
Had the EGR delete done and the engine has about 60 more HP. Fuel mileage is significant too.
Not sure if it will pass safety. Smells like a diesel now.