Hello, sorry for the slow reply. I was waiting a while to get a clear picture of where things stood and, well, you know....
But the new injectors are functioning fine. It's been a few months now since they were installed. That's the good news.
The bad news - it's having a hard time starting when warm. Not when hot, like driven in the last hour or so. Not cold, it gets going fairly easily then. But if I drive it a while then leave it, say, three hours - boy, that thing smokes and refuses to get going. Easily four or five long cranks and then it doesn't exactly run smooth. I'm guessing it's the fabled 'fuel injection pump after new injectors' issue.....
Man, this truck.....
So that's where we are. Not sure what the plan, really. This problem is proving to be quite a pain, need to decide how to proceed....
Again, sorry for the slow response but that's the current situation. And thanks again for all the help above.