Yale door lock bolt won't retract
I have one of the keypad-operated Yale deadbolt locks. The bolt has started failing to retract all the way. The codes work on the keypad and the bolt retracts, but it doesn't retract all the way; about a quarter inch is left extended which is enough to prevent the door from opening. This happens even when testing with the door open, so it's not a result of drag on the door frame.
I can't find any support or manuals for this lock. Can you provide any assistance in fixing this to properly retract the bolt?