Anyone ever have a lens release button fall off. I pulled my 1D out of my camera bag this morning and noticed it was gone. I still had the spring and the button but I couldn't get it to reattach. There's a hole and I tried to stick a small allen wrench to manually trigger it, but no luck. I can also hear a rattling when I move the camera. I'm assuming it is off to Canon Repair unless anyone has an great ideas. Anyone had this happen and what did Canon charge you?