Ok so I just came back from service center. Basically the deal is just like what we expected, only way to fix it is their approved bodyshop and they will only fix it this one time I can't delay it say for a later date and it will takes 10 days to get it done. Furthermore, they got to literally take the liftgate apart to do it and they have to order and replace the liftgate assembly when they take it apart. I was like wo wo wo hold it right there, is this cosmetic only issue that has long term effect, they go they can't guarantee it isn't but it does look cosmetic and if it is cosmetic it usually have no effect but won't confirm if it's cosmetic or not to protect themselves I think. So anyways I took the car back and told them I'm going to think it through. But ultimately I think I'm just going to hold off and if in the future if it has any issue I'll just go to a detailer/paint place to fix just the area, not sure I can trust their bodyshop to take everything apart and get it right. That 10 days might turn into 30 days.