OK, I'll look at it but there are consequences to this. Scheduler needs to guess how long a focus takes. So does Planner. If it spends too much time trying to focus because it doesn't meet the HFD requirement on a night of poor seeing the target timing can be altered significantly. Remember that not everyone takes long (>5 minute) images...

Again, why is the focus failing? Is this usually the first focus of the night? Are there others here who can chime in? Why would this come up after 10 years? I don't see much trouble with FocusMax at the several observatories I use for engineering.