Ok, First I removed the entire assembly from the bag.
there is a little hole in the side of the cylinder that holds the tumbler. I have tried using everything I can to get in there and pry up, but to no avail.
Mini screwdriver works well and so does an paperclip
After failing at that, I disassembled it down as far as I could go.
No way to slide up a shim or anything. Smallest feeler gauge I have, still won't work either.