More follow up as promised.

Have just weighed our old wishbones ... one is 1503g and the other 1535g. This includes the inboard rubber bushes. Regret I do not have a weight for the new ones.

The bends are very obvious using a 300mm straight edge, there is a +/- 3mm gap around the mid point of the bent forward tubes. For older cars, this is the simple check for problems

The cracks are both located the rear tubes where the web for the spring damper unit is welded to the tubes and would seem to berated to the quality of the welding process (overheating the thin tube?).

Happy to have new ones on our newly fettled car now back on the road in an exciting new livery for its "second coming".