Hey Zed,
I read your post about the potential injector issue. Sounds like you may be suffering from stiction. It is the most common cause of performance issues and injector failure in the 6.0.
We make a product called Hot Shot's Secret that was tested by International and proven to fix this issue. We are in Mt Gilead, Ohio (not too far). You can see us on the web at
Lubrication Specialties | Diesel Motor Oil | Primrose Engine Oil | Fuel Additives | Oil Additives | Engine Restore|.
The product works well and is 100% guaranteed. If you have questions you can give us a call at 419-768-2647 during regular business hours or just send us an email! Good Luck.