J5 Calibration Issue

I am having issues with my J5 calibration. I have confirmed (to the best of my ability) that the limit switches, encoder and stepper are all functioning and correctly configured. However when I run the calibration routine the Axis rapidly moves in the + direction until the motor stall with the J6 plate touching the arm. I tried reversing the travel direction but it didn't seem to recognize hitting the limit switch that way. Any ideas on what I should try next? Thanks!