Has any one had any experience using a laser catcher with 2D Earthworks on an excavator? It is doing all sorts of funky things. Some times after setting the bench mark on the ground and then catching the laser. I would go back to the exact same benchmark and would be getting a 7cm difference. Some times I would catch the laser earthworks would suddenly make the height of the laser the bench mark elevation. If any one has any similar experiences/solutions it would be greatly appreciated. Thanks!