Ok, so thought we had it fixed. corrected car numbers in group because we had 3 cars with the same number. Hall riser is working intermittently now. nothing consistent. No faults in the car the riser is tied to. Connected with hyper terminal and checked the hall nodes, showed no errors. Not sure where to go from here. Beginning to think it may be the blue box group controller that was off and faulted when turned on. Anyone have any other ideas?