Panasonic Stereo model SA-AK29 this is a five disc CD player. It is missing one of the "rings" that is shown in the next photo.
I am calling the part leaning up against the spindle a "ring" but really dont know what to ask for when i contact a parts supplier.. Anyone got a skit?
Here is a shot of the mechism, I found two of these rings loose within the unit, I only have 4 and i am sure i need a 5th.  Unit cycles through disc unless i ask for disc ONE then it locks up.  These rings are used as spacers to  keep the disc in proper order.
I think the unit failed because of sticky lubercation or most likely operator error.
Please email me if you got any info on this ozark_elect@hotmail.com