I just updated main post with firmware update fixes. The EGS firmware update fixed the hard downshift from 2-1. So if you have a hard downshift from 2-1 make sure you update the EGS module before you do any further investigations. It might be an explanation but at this point I cannot explain why with the old oil the tranny was working fine and with the new one I needed to update the firmware. I guess the new firmware can handle the tranny better when some parts are worn out inside there.