I agree with the advice the other members are giving you on changing your fuel curve torque plate.
I am also a big believer in the water injection systems for our trucks and have had water injection on my 1996 Dodge CTD 12 for over seven (7) years now with excellent success. Water injection will absolutley drop your EGT's under all conditions.
If you are interested, here is a link to a thread a bunch of us here contributed to on water injection. There is ALOT of info in the thread so get ready for some long reading:
Hope this helps you Sir!