Wow rebuilding mn-30. Remember all the discussion at the other forums when i was shooting f5's in weddings. I never used an mn-30 because i preferred to use aa instead. I didnt have a reason for the .9 of a frame jump from 7.1 to 8. I did try to work around it by adding a 9th battery and using silver foil to connect it in. I never noticed the extra boost in fps or rewind speed (6 seconds vs 4) of the film. It was a beast as is. The fastest and most advanced camera in its time. If i recall there was a place in germany that did the rebuilds but this is trying remember back 7-8 years back. How much does it cost?
all i can say is the metering system today is the same crap used then. Nothing has advanced. They boasted something like 50000 actual scenes are used to perfectly meter in 1004 color meter. What a lie. It sucked then and it still sucks today.