If you choose to execute fixes to your MuZ ETZ 301 then it will always be a good plan to own a Workshop Manual for a guide if you need to know how to take out a certain component for example the Door and match it again adequately.
MuZ ETZ 301 Workshop Manuals will give targeted diagnostic guidelines on your car so if something is faulty it helps you ascertain what the problem is and methods to fix it. You will be able to assess if this can be achieved on your own or in case the job is simply too big you can make a booking for your ETZ 301 right into a decent friendly mechanic.
MuZ ETZ 301 manual