Mafia's untinker checker is failing to mark the untinker as completed. When you say yes, it tries to run adventures to get the screwdriver from the knoll, not realizing that as it checks with the untinker to get the quest, it's already turning in the screwdriver and finishing the quest.
Basically, it's mafia needing to have its "is the untinker quest completed?" check updated to include visiting the untinker without prompting if you're already possessing the screwdriver.
