Not to worry
LP's are $150(from Cummins) and an easy 2-hour job. Mine has be replace once in 91,000 miles.
OR you can get Dodge to do it under the 100k warranty-if you want to wait three days for them to diagnose (what your gauge already shows), get approval, order (they don't keep LP's -or anything- in stock), and finally install (with the usual comment that-"we've never seen THAT before").
That's why I mentioned testing it on the first page of this thread. Some folks have had bad luck and replaced 3 or 4 LP's. Mine is 35,000 old and going strong. I upgraded the lines and removed the banjo bolts and mine supplys plenty of pressure for my overfueled application.
95% of CTD's never get a gauge installed. So when the lift pump goes out--nobody notices until the fuel filter is changed or the VP44 goes TU. VP failure isn't as common as some would have you believe.
Yes, KDP's and 5th gear nuts (12v issues) only have to be done once, BUT you go out there and try to find a good, clean, low mileage 12v--Heck they're SEVEN model years old at the youngest. And these things beg to be driven.
Oh and I might have found one in NC. It's a 98 ClubCab 4x4 auto. I called 'em but they don't know diddly. Have to get one of them to raise the hood with the phone in his hand so you can find out if it actually is a 12.
Hey DAVE you buy a truck yet???