How do I use a PC Sync cable to use PocketWizard FlexTT5 with Mamiya RB67? I have a number of PocketWizard Flex TT5s that I have no issue using with my Nikon cameras and studio flashes, but I want to use one with my Mamiya RB67 using a sync cable to trigger the PW but I haven’t been able to make it work. I checked through PW’s site (which is a disaster) and don’t think it isn’t possible. Does anyone have experience wit…