Here is some more pasted over; this exchange actually occurred before the previous post:

Quote Originally Posted by Frank R
Even though I had a lot to do I disassembled the camera yesterday. I studied those drawings and read the text too. The top plate you mentioned was only being held in by two of the four screws. After I pulled out the mechanism ( I had to take off the inner hood and the lens shaft too) I did not find anything broken. I think the missing screws caused a lack of tension on the shutter release spring arm (part 74). I think it got bent down a bit by too much pressure also. I may be able to bend it back a bit and reinstall the whole plate with all four screws; that should get it to work. The biggest repair will be the need for an entire new bellows.