YES to your question about the problem getting progressively more pronounced over time. Now every time I go down my driveway to go over to my flip house, next door, the squeal happens on the hill, in reverse, and when I come to a stop.
I too was finally able to listen to the you tube video- finally. Personally I don't think it does the noise justice due to it being muffled by the cab. I too have done a video but have not posted it anywhere- (I had my daughter do it to document the hours etc. when taken).
I've edited portions of this post because after speaking to my selling dealer today, he has agreed to step up the pressure on Kioti/ zone rep etc. to see what can be done to address this problem. Note he is NOT promising me any particular result- just a renewed effort to get some results toward resolution, hopefully...
As far as Kioti and how they've handled other problems in the past, I'm not really surprised- most companies try to hide whatever they can for as long as possible and when forced to take action may eventually get off their butts and do something.
Out for now....