It runs a 5% preload whereas the 32 era doesn't, in the workshop manual it outlines the two methods of putting the car in 2WD mode. One is dropping the shaft, the other is disconnecting the air bleed plug and pumping the brake pedal 5 times after you start the car. It works so well that I installed a switch and drive around every day in 2WD (until I broke the gearbox doing too many skids on semi slicks, but that's another story).
Point is, transfer case is fine and 4WD works perfectly when I want it to.