Hey Chris, a bit late on the reply here.. but likely you need to see a dealer to put the truck in regen mode and burn it off.
Otherwise, here is a thread: https://www.ecodieselram.com/forum/threads/exhaust-filter-full.4723/
That's the case with most dealers and Niche cars/trucks.. You could say the same about the F150 Diesel.. NOBODY, I mean nobody knew they even made one outside of your car enthusiast that tracked diesels and trucks in general.
Welcome to the forum! You'll get a variety of opinion on delete and tune for sure but I would lean towards the opinion of a truck that is deleted and tuned is a bit more reliable then not.
Likely not, for one, because a tuner typically will not edit another tuners file (at least one with morals) to do the delete. And funny enough, most of the "tuners" out there simply aren't qualified or know even how to do that outside of a "base tune" file.