HOW TO ENSURE ONE CHANNEL ALWAYS HAS THE HIGHEST VALUE, ANOTHER ALWAYS HAS THE LOWEST, AND THE THIRD IS ALWAYS IN BETWEEN

Set the weight of your highest channel to 3, the middle channel to 2, and the lowest to 1

Red-green-blues and red-blue-greens

  

Green-red-blues and green-blue-reds

  

Blue-red-greens and blue-green-reds

  

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The 3Dcheapskate* occasionally posts sensible stuff. Usually by accident.
And it usually uses Poser 11, with units set to inches. Except when it's using Poser 6 or PP2014, or when its units are set to PNU.

*also available in ShareCG, DAZ, and HiveWire3D flavours (the DeviantArt and CGBytes flavour have been discontinued).