Well, I went ahead and had four remanufactured injectors put in (all the drivers side while that valve cover is off). Bought them from Pensacola Diesel for $140 ea. Picked the truck up & it was smoking at idle, dealer said it was unburned fuel that would clear up. On the way home it did not clear up & was knocking distinctly like bad injector.
Called dealer next morning, dropped it back off for diagnosis. They said the knocking was normal diesel noise, I say if you think it's normal you need to stick to gas motors, insisted on more than road test. They finally checked return rates & two of the newly purchased injectors are apparently bad.
So, called Pensacola Diesel, asked why 1/2 the injectors they sent are bad. They said you should never replace injectors except at 8 at a time, their stuff is tested, blah, blah, blah... They are sending two more, but now I'm stuck for the labor & probably would have been better off with the dealers $325 injectors.
This sucks!
We'll see how the next round goes.
Apparently Reman'd was NOT the way to go... 
Linear Mode
