I was just given a 23CII and it looks like the lensboard is held on by four small screws - am I missing something? Seems like there should be an easier way to change lenses (like the Omega B600 I already have)

Also, the lower bellows are detached at the top - any suggestions for what glue to reattach? They also seem somewhat 'stiff' - like maybe some sort of oil or saddle soap or something would make them more pliable.