Do they spin freely when the game is off, are they securely attached to the cams (and don't spin when holding the cam still), are the optics cleaned? Have you run the tests in the diagnostics (Troubleshooting T. 18) to see if it is reading the reel correctly?
https://www.ipdb.org/machine.cgi?id=3685
Check the manual for the spinner reels troubleshooting steps.
Also consider asking in the Who Dunnit thread.
https://pinside.com/pinball/forum/topic/who-dunnit-club-and-then-i-was-on-the-case