[SAJ]

Thanks Columbia. I think you may be right. I have been watching the fretting corrosion coming out of the perch bolt, but the bolt seems very tight in the axle and I could not budge it last time I tried. I guess it must be working in the axle though, from all the rust emerging. This has happened quite suddenly, so who knows what I may find when I dismantle it and have a look. I bought a car when I was a youngster that had its kingpin bushes repaired with epoxy, which was new on the market in the early 60's. After only a few miles the kingpins went from tight to worn out and I sold the car. "Farmers" fixes last a lot longer than that! I hope this is the answer and it is just a matter of restoring the fit in this area . I see, too, that the shock link lies at an angle as BoB C points out
Regards to all who answered. SAJ in NZ