If you wish to carry out maintenance on your own Polini 911 AIR then it will always be a good plan to have access to a Workshop Manual to keep just for personal reference if you need to know the right way to strip off a specific part much like the Drive Shaft and install it again efficiently.
Polini 911 AIR Workshop Manuals will provide you with particular diagnostic info for your car therefore if something is faulty it helps you find out what the situation is and tips on how to resolve it. After that you can determine if you can do this by yourself or if the job is just too big you could make a booking for your 911 AIR right into a nearby friendly mechanic.
Polini 911 AIR manual