Pentax K3, Cactus V6II, Flashpoint Zoom and Flashpoint R2

I am trying to find a way to use the Pentax K3 to function in HSS with the Flashpoint Zoom manual speed light. I have heard that it is possible with the Cactus V6II. The method is to mount the Cactus V6II on the Pentax K3 and mount the Flashpoint R2 transmitter on the Cactus V6II to trigger the speed light in manual HSS. Has anyone tried this and how did you setup to work the Cactus V6II with the Flashpoint R2 and Flashpoint Zoom speed light. 


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