All of my experience is on Left Hand Drive vehicles. I wondering if the RHD 60s in Australia are a mirror image of LHD, or what parts are actually the same in both arrangements. Is the motor on the driver or pass side for RHD? WIth LHD, its on the pass side. With the motor unbolted, there is enough movement in the linkage to get a screwdriver in there and pop the rod off the motor. Another option is to remove the entire linkage, pivots and all without disconnecting them. Its not hard. There are two bolts at each pivot - under the plastic cap. Let the pivots fall down into the cowl space and the whole thing should slide out with the motor.
. That was stupid. I just randomly put it back on, and when I turned them on, they went backwards, as in they moved toward the front of the truck instead of up the windshield. Took it back apart, figured out the timing of the motor and it works just fine now.