I have some 1200 ounce*inch stepper motors directly driving my x and y axis of a Harbor Freight geared head mill. 50v power supply, Gecko 540B driver. About once every 2 months or so of nearly daily use, while it's moving with the G00 command, the x-axis suddenly locks up and starts making that honking noise. Could it be a controller issue? Has anyone had this problem as sporadically?