I opened up the timer tonight and adjusted the potentiometers as outlined by Ken and Rick and everything works perfectly - most of the time! I also checked the contacts on all the cables and everything is clean as a whistle. Interestingly, after getting the adjustments made so the timer matched my iPod timer on 68F, I realized as I starting putting it all back together that the problem seems to be in the rotator switch itself! When I pull down on it (toward the base of the unit), it runs normally; push it toward the top of the unit and the film side runs fast. This action does not affect anything else. Other than replacing the switch, any ideas on how to correct that? If I keep having the problem, I will talk to Calumet as several of you suggested. Thanks again!