[Mike K]

The split valve guides can be a pain to get out . I had a aftermarket tool that Ryans used to sell ( remember Ryans in the city , Melb., with the overhead cable payment system, a employee sat in a little cubicle in the roof and the cash was sent up by a overhead cable system, the change returned the same way).

You inserted the specially shaped tool down around the valve head ..onto the guide and hit the guide downwards ( after removing the C clip ) . The tool is made from round bar with the end grooved to fit around the valve head ,it's a odd shape..like a C shape at one end , its curls upwards. Don't know if you can still buy them . The bar is awkward to use. MIKE