I've just install a Avantgrade rear wing and the workmanship of the shop was so poor that I've asked them to reinstall it next week. However, I've notice they have used glue instead of screws on the 2 contacts on the side. This worries me a lot as I think it will definitely damage the paint when they try to remove it. Has anybody has any experience on this particular installation? I'm planning to stay there to make sure everything is OK. Thanks.