I received my SJ7 a few days ago (I am in US and purchased from Amazon) and am quite happy with the image quality. I AM concerned about the amount of heat generated when filming in 4K. It gets so hot it is uncomfortable to hold in my hand. I have read that SJ has admitted that they will be making changes to the camera (new faceplate material, possible add ventilation holes, and possible firmware changes) to address high heat. Should I return the camera and wait till the changes are implemented or will I be OK with the camera as is? I am also concerned that it is very hard to find batteries from any US sellers. I really hate ordering from China as the transit time is so long. There appear to be very few accessories available here is the USA. Do you think this will improve or will I be stuck ordering everything from China?