No More Creaky (CF Card Door), Canon 5D
I own 4 Canon bodies. I just checked and not one of them has a squeaky creaky memory card slot cover (Canon's terminology). Two of them are 1D series, the actual high end of the Canon lineup.
After looking at the mechanism, I don't know how it could ever get creaky, unless I used them for sand shovels or immersed the bodies in salt water. Maybe I'm just lucky.
Have a happy and good day