Well, that worked! Took about five minutes. I took the inside bottom off the malfunctioning camera and couldn't tell why it wasn't working. BUt I did notice as soon as I did that that 1/30th and 1/8th came back. Withing about a dozen test fires, I had everything from 1/4 and faster back. I opened up the one with the bad meter and good mechanics and noticed that 1- the faulty shutter sped one had two rusted screw caps inside the shutter box and 2- some lever wasn't engaging when bulb was pressed.
Eventually, just with use, I was able to get all the timed shutter speeds back, but bulb simply was not working. The lever causing the problem is one next to (on the right, facing into the camera) the top of the geared cam that connects to the shutter speed dial. It was pretty stiff, as was the rest of the inner mechanism. So I put some rubbing alcohol on a Q-Tip and dabbed the reachable gears about five times. I ran each shutter speed twice and then tried bulb again. On the third try, bulb worked! I had a bit more work to do, though, because I had to tap the faulty lever with my finger to get bulb to disengage, and that would be inconvenient at best during shooting.
So I put a bit more rubbing alcohol on that lever and tapped it a few times. It seemed that a spring controlling its freedom to move was not cooperating (this spring happens to be around one of the screws with a rusty cap, so there may be a connection.) Forcing the lever to move a bit more than it wanted to (by like 1mm) did the trick and bulb worked as required consistently for about 20 tries. I let it sit while I wrote this, and bulb still works. It looks as though it was a combination of thick lubricant and possibly some glue that had been put in the wrong place (the bottom plate on this camera had two glue spots whereas the other only had one and the different glue spot on the underside of this camera's plate corresponded to one of the inner levers and springs.)
Now to debate whether or not I want to try and diagnose the faulty meter in the other one.
Thank you again, both, for your help.
Originally posted by TaoMaas I should have thought of that.
No need to apologize. I had to go back and check.