Delta Kossel Endstop Adjustable

Adjusting the Z axis end stop position on my Anycubic Kossel Delta print was not very accurate with the factory micro switch bracket.
This bracket has a 6mm bolt to fine tune the end stop position.
Just loosen the T bolt, lower the bracket and then turn the 6mm bolt in or out.
Raise the bracket back up to the top of the rail and tighten.