I was recently gifted a 5x7 Graflex SLR, one of the non-rotating back variety. Half the shuter curtain is present (the upper roller with (most) of the curtain attached), but the lower roller with the tension setting mechanism is gone. Anyone have any idea what the availability of such a mechanism would be, and if the mechanism from a Speed Graphic or a smaller Graflex SLR would work? I don't know how much if any effort I want to invest in this beast, but if it's possible I might want to try and resuscitate it.