No haven’t tried heating the swing arm so will try that. Battery acid has dribbled all over the swing arm so I have to do some repainting anyway. Will also try the hacksaw cuts. The residual problem is getting some ‘edge’ on the inner end of the bush in order to drive them out. On my Z1 the central collar or sleeve was easily pushed off centre to expose enough of the bush end to get a bar against and drive out the bushes. Will keep pottering.
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