I bought and LGB2 77in OLED from Costco in December 2022. As for it’s picture quality, it is superb. However, I have a major issue. I often watch broadcast TV channels for which I have always used an indoor amplified TV antenna in my living room. All my other TVs which are more than 5 years old (and include a 60 inch LG plasma, a 55 inch LG LCD, a Samsung TV/Monitor and one other cheap LCD TV) are able to tune-in about 60 broadcast channels. The LG B2 is only able to tune-in about 26 channels with the SAME indoor antenna. More importantly, it is unable to tune-in the main broadcast channels like CBS, NBC, FOX and WLIW (I live in Middlesex county NJ). I have a 5 year extended warranty so I recently raised this issue with the LG Service center. After running some remote diagnoses over the internet, they tell me there is nothing wrong with my TV and refuse to send a service technician to take a look. I think this is totally unacceptable. What should I do?