Hello everybody. I bought an LG OLED C6 back in 2017. Beautiful image. I read all that I could on burn-in. And applied all advice. Regardless. 6Y into usage, I can see the Netflix logo, there are two shadows where subtitles are, and the center has a darker area. All very visible on red or white backgrounds. How can I tryst advice any longer? I really applied all that I could. Thank you