I have a Zone VI Compensating Developing Timer with an odd problem. While the "paper" and "real time" settings work perfectly, for some reason the "film" setting has begun acting up - specifically, it times at a very high speed irrespective of the temperature. Even when the temp probe is unplugged, 10 real seconds shows as 30 or so on the timer - the time absolutely flies by! Any ideas on how to fix this? Since the timer is otherwise working perfectly, I'm hoping there is a way to adjust this, so any advice is much appreciated. Thanks in advance!