I do not have a TF, so I am imagining what it looks like, but could you pop two suitable looking washers around the joint, one either side.
This might give you the reduction in movement that will please the tester.
As long as the washers look OEM then you might get away with it, as long as you are happy that there really is no problem with it.
As a possibly relevant aside when I take my old Porsche for MOT I take the workshop manual to show the tester the description of the wheel bearing adjustment so he knows that the slight play that can be had is factory spec and he acknowledges this and passes it as long as it's in spec. It never seems right to me, but Porsche were quite clever and it drives nicely.