Mater's Workshop... Sound is only in the left ear. In stereo mode the sound only comes out of one side. One mic for left and one mic for the right side. It happened to me too. You will have to put the RX in mono mode for the sound from one mic to come out of the left and right side. Use the furry thing or put the mic in noise cancelling mode and you won't have to worry about fan sound in the background. Once you get them adjust right you will love them.
When ever I was fixing computers, building computers or just swapping bad parts for good parts I always tossed the screws in a general container and then sorted them out later to be put away.
Sounds good, Looks good too, its able to get over the noise in the background. You can do test recordings without publishing these vids. I have tons of screws from my years of doing this as a hobby and side jobs. Here's a tip my viewers gave me many times when I 1st started,,,CLOSE UPS! We cant see what your talking about. Hold it up to the camera! I've mentioned before that those camera's even have 'Product showcase' mode! Watch Renegade, Its more capable of dealing with the focus and distance like when ya hold up a small product like that then pull it away! Keep in mind, these days people are watching on a phone! They cant see these things and will get frustrated and leave. I say this many times on my lives, get the camera close and avoid the zoom.