Is there supposed to be a stress relief groove on each side of the filler panel between the trunk lid and the conv top,or is it smooth. When I got my car back from the paint shop 10 years ago,the paint in this area cracked on both sides. I have just put my car in another shop and don't want this to happen again. any suggestions?:

The convertables were filled here from the factory is my understanding,not sure why they are and hdtps arent