I am considering buying a Landsta, but I read 2 reviews that complained of falsing when the coil was brushed against grass or weeds. Has anyone had this happen with their Landstar when brushing it across the top of mildly overgrown grass or weeds? If this machine is inclined to do this, then is it possible to eliminate or minimize somehow other than keeping the coil from touching the grass? I want to be able to just brush the top of the grass while swinging if the grass is slightly overgrown. I have seen videos of other detectors brushing the top of the grass while swinging it back and forth without any falsing. So is it just the Landstar that might have this problem, or were their units just defective or not set right? Thanks for any feedback.