Many thanks Brian and everyone for all your help. I finally got the bearing carrier out and it was the pin as you thought Brian, somehow it had worked its way loose. The whole area does seem original and nothing had moved so I tapped the pin back in and filled the space with solder and used a centre punch to crimp the end over that I reckon it should work ok. The parts I ordered arrived today which once again is amassing. You all rock over there. I ordered a Clymers manual with the order, you informed me Brian that it was out of stock and you had them on a back order. Could you send me one when you get them in. Once again many thanks and kind regards to you all in the west.
Received within 24 hours
Everything received within 24 hours! Thank you for the prompt service! Looking forward to ordering many more parts as I rebuild a well worn K100