OK, so we bought this CNC kit. Came with table, motors, Gecko G540 controller, and trial version of Mach 3. Setup up everything, wired the motors, installed the mach3 and open xml file to connect with Gecko G540 and nothing. The motors hum as if there is something happening and they are locked, but cannot jog the unit with mach 3. Am i missing something with the setup? thanks