Jeff,
I know I'm no expert on the 4di, but between the pair of us, we share some experience, so I'll throw some ideas at you and see what you think.
I'd reduce the Throttle Position to go Open Loop value from 7/8 throttle to zero as a test so it never goes closed loop if you feel the fuel map is correct, or near correct
I'd guess you know the system fairly well since you're using the AChart program.
Can I ask how you have scaled the rpm, map, tps scales?
Can you give some details on your engine combo - capacity, compression, cam, intake manifold, injector lbs/hr etc?