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ADXRS645 Range Extension

What is the relationship for increasing the range on the ADXRS645?

RANGE EXTENSION

The ADXRS645 scale factor can be reduced to extend the measurement range to as much as ±5000°/sec by adding a single 120 kΩ resistor between the RATEOUT and SUMJ pins. If an external resistor is added between the RATEOUT and SUMJ pins, proportionally increase COUT to maintain correct bandwidth (that is, if adding a 180 kΩ resistor, double COUT).

From the datasheet two points are given: ±2000dps (open) and ±5000 dps (120k). From the COUT bandwidth comment I assume 180k would half the gain => ±4000dps and I can work backwards from there, but please confirm.