If there is a small change to the center of gravity (COG) (recess) then the lifts should not change their position if the change is lesser than 10 mm, default value, or any custom value.

As the default value is 10 mm, two recesses that change the COG 7 mm were added to show that the lifts stay in the same position. The next picture has three recesses that change the COG 15 mm and there can be seen that the lifts changed position. 

The same was done for the custom value of 5mm, one picture with 3mm change of COG and one with 6 mm. 

Example of the IMPACT default setting:

Example with a user default setting: