I just picked up a Ricoh XR X 3PF and a XR-7. The Ricoh XR X 3PF has 3 contacts on the hot shoe and the XR-7 has 2 contacts on the hot shoe. I have some Pentax compatible flash units. Some of my flashes have 3 contacts and some have 4 contacts on the flash itself. Will my Pentax flashes work in these Ricoh bodies? Is there any chance of high voltage damage to either the cameras or the flashes if I just try them out?