I have two Vivitar 285s. One is the HV and the other is not. The non HV had a broken hot shoe which I replaced with a metal one. I combined the red, green and white wires together and soldered them to the center contact and the black to the other contact. I tested the flash thouroghly and everything works fine. I was researching these hot shoes on the internet and discovered different wiring methods, the most comon is the connect just the red wire to the cener contact and seal the green and white wires.. Will my wiring configuration fail in the future? I shoot weddings and I need my equipment to be as reliable as my Vivitars are.