Can anyone recommend someone to make an easy repair to an older style Wista 4x5? The round on the right-rear side that tightens down the tilt rail has broken. The screw that the knob sits on has snapped off. A good repairman should be able to fix it easily. I could probably do it, too , if I knew where to get the part.

Does anyone know of a parts supplier or a repair man who can turn this around fast?