I have taken on a part completed 6040 with the usual Longs drivers and motors. Long time since I did a setup and I am flumoxed to solve my motor direction problem. My motors run smoothly but only in one direction. The on screen jog MPG has the positive arrows all green but the negative arrows are red. Both red and green arrows send the motors the same direction. Should I suspect the wiring on drivers or is there something dumb I have not done in Mach3 setup.