Intuitively this statement makes good sense, but the reality with our sensors and the e-Level system is that as long as you have over 1" of travel, you will not see a noticeable difference in accuracy or performance. This is because the sensor itself puts out an infinitely accurate output by using non-contacting magnetic technology. The e-Level controller will then calibrate to the lower sensor travel and span the total travel to 100%. So definitely staying on the safe side of sensor travel is better than over extending the things