Thanks guys for the input. MUCH appreciated.

H20Diesel: I kind of suspected the injectors since they have almost 200,000 on them. I am planning to go get some junkyard cores & bring them to an injection service place that has a great reputation for their rebuild services. They do all of the big rig stuff, and when I talked to the supervisor, he said that they rarely ever need to replace the nozzles. I was kind of surprised by that statement, but he said that if it were needed, then they would replace the nozzle as well. Otherwise, they regrind the nozzle seat (I think he said the seat), clean the orifices, set the opening pressures, and check the spray pattern. For much less than the bosch rebuilds; and I have read here that the bosch units are not necessarily very consistent in their Q.C. I like the idea of having kind of a ‘personal touch’ on something this critical & exacting – having one guy do all the injectors and setting the pressures seems like a good idea, versus an assembly line mentality that may be present wherever the bosch units are rebuilt. OK, I’m rambling, but I would value your opinion on this. Do you feel that NOT automatically replacing the nozzles is an acceptable practice, and are reground ones just "as good as new"?

Thanks Again!