flcamerarepair: the fix on a Unicum shutter didn't last. When I opened it up, it had grease on it and dust. The blades were a little bent as a result of being in the sun on display; the blades were discolored where the sun hit them and they bulged. It would rub on the iris and get stuck. The tech said there were no low speeds. HA.
I polished the grease off, flipped them and swapped them with each other and now all speeds work. No, I won't thank him because I paid HIM to do the work. But, now I can do better. And I know better.