If you have to conduct adjustments for your Veli VL200GY then it will always be a great idea to have access to a Workshop Manual to keep just for a reference should you need to know tips on how to strip off a specific part including Door and match it again properly.
Veli VL200GY Workshop Manuals can offer you detailed diagnostic details with regards to your automobile so if something is wrong it will help you determine what the problem is and how to correct it. You can then evaluate if this can be done on your own or in case the job is simply too big you could make a reservation for your VL200GY right into a local car garage.
Veli VL200GY manual