I tend to try and break those ambiguous tasks down to less ambiguous action items. Sometimes that's not so easy because the task is "fix the stupid thing" - but

I tend to try and break those ambiguous tasks down to less ambiguous action items. Sometimes that's not so easy because the task is "fix the stupid thing" - but I've found you can at least outline your process for approaching it & then sort of make sure you're following your troubleshooting process & using those steps as "action item" tasks.