What is the reason for the imbalance between the two axes in the car inspection?

The main reason why the two shafts are unqualified is that there is a problem with the maximum process difference between the first shaft and the second shaft. According to my practical work experience, it should be that the brake cylinders of these two wheels are out of order and not sensitive enough. When stepping lightly, the two wheels on the right side hardly generate braking force. You can see that the data is normal when you push it to the end, which is why the landlord said that he didn't feel the deviation when he pushed hard. The solution is to go to the repair shop to check these two brake cylinders.