that sounds like the spiggot bearing that is used in auto's, they aint used in manuals mate....Not sure about the play in the input shaft. Was out with the mechanic earlier. He just gave me the ring that he took out which looks like there should be more to it. he said that the input shaft is about half an inch thick but the centre of this is about 3 quarters of an inch. I changed my gearbox years back from auto to manual and could be possible that they put this in wrong. tryin to get pics off my phone of the bearing or whats left just looks like a steel ring