The "Normal Mode Shift Tables" are used for most driving, for WOT use the "Kickdown Mode Shift Thresholds". In kickdown mode both RPM and MPH qualifiers must be meet for shift to occur.

The "RPM/VSS Ratio" and "4wd Low Reduction Ratio" calibrate the bin for tire size and gear ratio. From what you described, the 4wd Low ratio needs some adjustment.