Personally, I'd let sleeping dogs lie. You now have a clean title and as far as the state of Utah is concerned, that's what it is.
The title on my Cadillac has an S where a 5 should be. It was like that on the title when I bought it. The seller said it was the same way when he bought it.
I contacted the State and asked them about it and was told that I would be better off leaving it alone. It has a clean title and had one when I bought it as far as the State of Georgia is concerned.
I wouldn't open a can of worms that doesn't need to be opened.
When you or your heirs sells the truck, you'll sign the title over to the new owner and he'll register it in his name like any other vehicle.
