I believe your X and Y axis are swapped in mach 3 from what aspire calls your x and Y.
If your standing in the front left corner of your machine the X axis (what mach 3 calls it) runs left to right and Y axis runs twards you and away. Look at your orientation simbol on your mach 3 screen. There may be a way in mach 3 to swap how X and Y are orientated but I have not found it. I had my machine wired the same as you and ended up swapping the X and Y stepper to keep things straight in my head.