Hi Art,
congratulations - the CL is a fine and reliable tool, and if you've also got an Elmar C 4/90, you will be able to satisfy any curiosity, since this is a very discreet set for shots at the mall, at the plaza, within the crowd. The shutter is not exactly as silent as in the M body, but it doesn't make half the noise of a SLR.
I used to work with the CL for almost 15 years, and from my experience there are only two sensitive issues about the body: the takeup spool for the film is of hard plastic, and the takeup teeth break rather easily - so handle with care.
The second crucial point is the TTL meter. Due to corrosion, the meter may be the first thing to fail (no wonder - after 30 years). But as long as it works, it allows great results. It is a real spot meter - quite more exact than the big spot in the M6, if you work with available light mainly. Try!
Markus Baum