I've got an LG OLED 55B7P and I just bought an Atlantic 23-65" Full Motion Spring Arm TV-Mount (Walmart). I got home and my found out that the TV is VESA 300x200 compatible. This mount does not size for 300x200, but it does every other setup. could I tweak something to make it work?Is there something out there that you'd recommend for this TV. I want to buy a nice soundbar, so I really can't afford to drop $500 on the Mount.