Well, I've changed the battery, but it's still sticking. This is what's happening... I fire the shutter, then the film advance lever won't move. If I move the shutter over to the "emergency" shutter position, and press, it doesn't fire the shutter, but it seems to tell the lever... ok!! Time to advance!!

I've just tried it again, and moved the shutter dial to AEF, and fired a shot, and the lever worked. Then moved the dial back to 125, and it worked, again. Ok... go figure. I'm going to expose some rolls tonight, and check the shutter speed.