If you choose to perform fixes to your Beta M4 then it is usually a good idea to have access to a Workshop Manual for a reference in the event you need to know the right way to strip off a particular component for example, the Wheel Bearing and install it again in the correct way.
Beta M4 Workshop Manuals offers you distinct diagnostic information for the vehicle so if something is faulty it will help you find out what the problem is and tips on how to make it better. You can then assess if you can do this yourself or if the job is just too big you can make a booking for your M4 in to a suitable friendly mechanic.
Beta M4 manual