mini 3 pro controller

I have a lot of hours of Mini 1 and 2 flights under my belt, which I've flown using an iPhone or cell-enabled iPad. With those devices, I grew to rely on the map in the lower left of the app to identify the surroundings. But with the Mini 3 Pro's controller, since it's not a cell-enabled...

So I started noticing it when I move my right stick upwards slowly, it makes weird noise, such as rubbing against something. I can also feel that it’s not as smooth as the other directions. Should I send it back? Bought my drone for around six weeks. I have uploaded the sound to google drive...