Hi Dave, just had a quick check of the wiper blade assembly, no real play in the arm pivot pin area, slight slack in the spline shaft.
I have always had some degree of wiper judder on all the Morgan’s I have had, the CX is no exception. I have the updated blades, but don’t do that much driving in the wet. Tend to use on intermittent wherever possible, only using constantly if it’s very wet, using the washers for occasional lubrication.