OK. It's hard to tell, but i think the flange balls are too small for the holes. Are they the same size as the ones you've used for the front? Have you checked the measured diameter matches that specified?
That should be all the flange balls needed for the project now - do you have any spare?!
Again, double check you have used the correct bottom arm.
That should be all the flange balls needed for the project now - do you have any spare?!
Again, double check you have used the correct bottom arm.