Parameter Explaination(s) needed for tweeking an Auto Land Mission

In hoping to fine tweek an Auto Land Mission I have a couple of parameter questions:

  1. If Increasing the TECS_LAND_SINK parameter in actuality shortens the flare point and in turn causes overshoot of the LAND way-point, then would increasing the TECS_APPR_SMAX parameter value not help either?

  2. Does the TECS_LAND_SRC parameter value (if increased - larger number) actually help in preventing overshoot? It seems like I have raised this number from .2 to .8 and didn’t see a significant difference related to my overshoot issue.