Hi all! I have this cool old Citizen 4-096029 Y Chronograph / Dual Time. Strangely, when I press the 'mode' button, it switches between two time zones, but never goes into chronograph mode. Is that a problem with the watch, or is that expected? The reason I say it might be expected is because I have a similarly old Tissot Data Recorder with Chronograph, Dual Time and Timer, but it can only be in one mode at a time, and switching modes requires a very obscure button combination. Is this is a similar deal? I couldn't find a module number for this one.