Just wanted to close this one out, call came in again on 12/7. I did decel learn like Norcan suggested, and returned car to service. Car has now run for 5 days fault free! Thank you to all who helped. Learned a lot about this controller and changing it's components. Pulling out the drive, CPU, and ADON all at once for testing definitely caused some issues even while saving all parameters. Special thanks to VTR Tech for helping us troubleshoot from the start.