yeah I went through all of that. everything was reading fine up to the travel contactors. I just figured out the issue Friday. Another tech tried his own method of troubleshooting. He had the A1 and D2 power cables swapped. so the pulsing I was seeing was the motor trying to go forward and reverse at the same time. This was all an oversight of my own. I was digging in deeper than I should have. I should have kept it simple.