Is the slowness in the faster speeds an issue because it needs cleaning or is it a sign of some really expensive defect? I expect to have to clean the shutter on just about anything I get unless it has just been done.

I am looking for pretty much this exact camera: 532/16, Synchro Compur, 80mm Tessar. I'm not a collector and so a mint edition is not necessary, but good shooting condition is.

I'm also not in a big hurry, so moving on and continuing to look for the right camera is not a problem. My GS645 takes a good picture and is lighter in weight. I just want some of those nice 6x6 Tessar images in my portfolio. :-)