BTW Scott. It's a great camera, I love taking mine out every so often and exercising it. Usually down in Pacific Grove, CA where I can pretend I am Weston. When I run out of loaded film holders (and it takes the wider slotted ones), I use a 2 1/4 x 3 1/4 roll film adapter. If you find one, make a clear plastic sheet with the 2x3 lines drawn on it for the reflex view panel.
669 is still around, it just takes crappy pictures. I have heard the Fuji film is much better tonality wise. I'll drag out my rb67 polaroid holder one day and give it a try.
tim in san jose