Hi Robert, I bought your rf645 six years ago, though i don't remember any winder problem. I sold it a few months later because I found the images unsuitable. I have also gone through the same disdain for MF cameras as you and have currently settled on a GF670, at least for now. The Fuji GS645 was the best RF style camera I used, but it wasn't very reliable and froze up in cold weather. Mamiyas gave me color I didn't like, and the Plaubel was too slow in operation. My very favorite was the Pentax 645N2, which gives images a very nice tone and is very easy to use. Versatile too, I often wish I kept it. The camera is on the heavy side, which is why I decided to let it go; I found myself always leaving it at home. If you don't mind the weight, I suggest this camera the most. Before going digital, Salgado was using the 645n2 system for his earth project - it seemed to be holding up well in tough conditions.