Thanks for responding. The front and rear flex disks are the same 'new' p/n 1704100015 with a 6 bolt pattern. The front shaft compressed to allow the disk to be removed with low/medium effort. But, I seem to be trying to pry the rear connection with no results. The main thing is there seems to be no room for the shaft to move away to let the ring fall out or to the side(up, down, etc.) to allow it to be released. Does the metal support arm need to be removed that hangs under the shaft and/or the exhaust, heat shields, etc? I am hoping someone has done this job recently and has experience with this process.