My RV7 got about 70 hours. Last weekend I had a passenger to take some video, and I noticed a obvious wing panel wrinkle. Since I could not see it from left seat without really reach out, I didn't notice this until now. The wrinkle probably has been there from day 1. I checked the wing panel while on the ground, the wrinkle is not obvious, but noticeable when looking hard. When pushing the panel, you can see some sort of oil canning behavior (panel is not very tight). I don't remember seeing this kind wrinkle from other RV videos, it could be just that the light and angle make the wrinkle so obvious. The plane flies really well, and there is no vibration on the panel during flight, so I don't think it will cause any safety problem, but just wonder if anybody noticed something similar. Picture is shown below, you can see the winkle at the bay right after the fuel cap