Abou 2 years ago I have followed these instructions to clean my mouse and everything was perfect. But now I tried this procedure again, but the mouse ball isn't working anymore. I thought I had the flat cables in the wrong position, and then I checked it, and I think they are in the correct position. The photos are small and I cannot be sure the position of the flat cables are correct. I would like to know how can I check this. What is the correct side to insert these flat cables? I'm sure I close the ball box correctly and it's running smooth inside it.