ok, well i accomplished my first goal of finding a place to get the inafmaous "g" adapter that allows rb backs on the rz series. i somehow found a thread on apug from 2007 talking about doing what i am trying to do and it said its impossible to mount a 6x8 back from the rb on the rzproii and it work. my question is why? the measurement posted in that thread show the rb pro-s having a rear opening of 69x68mm and the rz having one 68x67mm. the 6x8 back is like 74x58 or something along those lines. i dont understand why 74mm works on 69 but it does on the pro-s, so ill accept it. my quesiton is why wouldnt it work the same on the RZ with a g-adapter. it seemed in the other thread that the adapter was the weak link and it was too small, could it not be machined to match the film back or rear camera opening? is there anything that can be done to outfit an rb 6x8 back to an rz67proii???