If you have to perform adjustments for your Ducati 999 S then it will always be a good idea to own a Workshop Manual to keep just for a reference should you need to know how you can take out a specific component for example, the Door and match it again perfectly.
Ducati 999 S Workshop Manuals can offer you detailed diagnostic guides for the automobile therefore if something is faulty it can help you work out what the problem is and some ways to make it better. You can then decide if this can be done on your own or if ever the job is too big you can make a reservation for your 999 S in with a suitable friendly mechanic.
Ducati 999 S manual