Originally Posted by Fedzilla_Bob
Oh, use Zippo on cotton swabs to dab the fuid onto the shutter blades gently.
Iyour camera has been cocked and fired recently it may snap suddenly while you are cleaning it. This surprised another member.
That was, uh, me, and yes, I was startled when it snapped. This was a QL17 GIII and not a QL19 but I assume they are very similar. That's really all that was wrong with it. After I initially got it un-stuck, I fired it a few times at each speed and it's worked fine ever since.
Another thing you said about the aperture. After I got the shutter un-stuck, all of the aperture and meter and stuff then behaved as you would expect.