Has anyone had any problems with the micro SD card slot on their X5? Mine has worked fine with a 64GB card and the original 16GB, which I only use for firmware upgrades. When I bought two new Sandisk Extreme Pro cards I got "No SD card" messages. To cut a very long story short, now the slot won't read any card I put in it , new or old. I've had long e-mail conversations with Sandisk and DJI and I'm on the point of sending the camera/gimbal back to DJI or my dealer. I can't see any debris in the slot and there is no sign of damage in the slot or on the cards and I've lost track of the many ways I've formatted the cards. Everything seem to point to the slot or the associated electronics. I've avoided blowing the slot out with compressed air because it's not usually recommended for cameras. Any thoughts would be appreciated.