to desense a proxinity sensore move the sensor back , making the gap wider .
and in some cases making the area it senses smaller , without knowing the exact location etc , it's difficutl to know what can be done . so moving the sensor away from the target decreaces it's sensitivity and or reducing the sensed area , and the opposite applies moving forward or making the target area larger will increace sensitivity .
For people that stumble over the same problem:
The Option HOME_IGNORE_LIMITS for every axis in the ini-file did the trick. Now its ignoring the Limit-Function while homing..
Thanks for the help anyways.