Greetings everyone! Recently I've replaced the landing gear since the rubber pads wasn't in good shape. I paid an official dealer to do the job and yesterday he called me to pick it up. I saw one strange mark on this leg and he told me that everything is ok. Do you think that this mark is a mould mark or he did something? I really want to replace the landing gear again since I want to keep my Phantom in good shape.

Hello there GUSPMETAL. Thank you for reaching out and for these information that you have given. May we know if you have already made a test flight on your DJI Phantom 4 Pro and if you feel that the said DJI Drone is not responding or flying properly? In addition if there is an issue or you wanted to replace a part of your DJI Phantom 4 Pro.  I would recommend you to contact our DJI support team at https://www.dji.com/support?site=brandsite&from=nav for further assistance. We have a team that will do there best to help you and give out the best resolution for the said issue. Thank you and fly safe always.